261248820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:378

約数の個数: 192

約数和(自身を含む): 878169600

約数和(自身を除く): 616920780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 89, 105, 116, 140, 145, 174, 178, 203, 210, 241, 267, 290, 348, 356, 406, 420, 435, 445, 482, 534, 580, 609, 623, 723, 812, 870, 890, 964, 1015, 1068, 1205, 1218, 1246, 1335, 1446, 1687, 1740, 1780, 1869, 2030, 2410, 2436, 2492, 2581, 2670, 2892, 3045, 3115, 3374, 3615, 3738, 4060, 4820, 5061, 5162, 5340, 6090, 6230, 6748, 6989, 7230, 7476, 7743, 8435, 9345, 10122, 10324, 12180, 12460, 12905, 13978, 14460, 15486, 16870, 18067, 18690, 20244, 20967, 21449, 25305, 25810, 27956, 30972, 33740, 34945, 36134, 37380, 38715, 41934, 42898, 48923, 50610, 51620, 54201, 64347, 69890, 72268, 77430, 83868, 85796, 90335, 97846, 101220, 104835, 107245, 108402, 128694, 139780, 146769, 150143, 154860, 180670, 195692, 209670, 214490, 216804, 244615, 257388, 271005, 293538, 300286, 321735, 361340, 419340, 428980, 450429, 489230, 542010, 587076, 600572, 622021, 643470, 733845, 750715, 900858, 978460, 1084020, 1244042, 1286940, 1467690, 1501430, 1801716, 1866063, 2252145, 2488084, 2935380, 3002860, 3110105, 3732126, 4354147, 4504290, 6220210, 7464252, 8708294, 9008580, 9330315, 12440420, 13062441, 17416588, 18660630, 21770735, 26124882, 37321260, 43541470, 52249764, 65312205, 87082940, 130624410, 261248820]

約数ペア:

[(1, 261248820), (2, 130624410), (3, 87082940), (4, 65312205), (5, 52249764), (6, 43541470), (7, 37321260), (10, 26124882), (12, 21770735), (14, 18660630), (15, 17416588), (20, 13062441), (21, 12440420), (28, 9330315), (29, 9008580), (30, 8708294), (35, 7464252), (42, 6220210), (58, 4504290), (60, 4354147), (70, 3732126), (84, 3110105), (87, 3002860), (89, 2935380), (105, 2488084), (116, 2252145), (140, 1866063), (145, 1801716), (174, 1501430), (178, 1467690), (203, 1286940), (210, 1244042), (241, 1084020), (267, 978460), (290, 900858), (348, 750715), (356, 733845), (406, 643470), (420, 622021), (435, 600572), (445, 587076), (482, 542010), (534, 489230), (580, 450429), (609, 428980), (623, 419340), (723, 361340), (812, 321735), (870, 300286), (890, 293538), (964, 271005), (1015, 257388), (1068, 244615), (1205, 216804), (1218, 214490), (1246, 209670), (1335, 195692), (1446, 180670), (1687, 154860), (1740, 150143), (1780, 146769), (1869, 139780), (2030, 128694), (2410, 108402), (2436, 107245), (2492, 104835), (2581, 101220), (2670, 97846), (2892, 90335), (3045, 85796), (3115, 83868), (3374, 77430), (3615, 72268), (3738, 69890), (4060, 64347), (4820, 54201), (5061, 51620), (5162, 50610), (5340, 48923), (6090, 42898), (6230, 41934), (6748, 38715), (6989, 37380), (7230, 36134), (7476, 34945), (7743, 33740), (8435, 30972), (9345, 27956), (10122, 25810), (10324, 25305), (12180, 21449), (12460, 20967), (12905, 20244), (13978, 18690), (14460, 18067), (15486, 16870)]