81980100

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:404

約数の個数: 180

約数和(自身を含む): 275698500

約数和(自身を除く): 193718400

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 29, 30, 36, 45, 50, 54, 58, 60, 75, 81, 87, 90, 100, 108, 116, 135, 145, 150, 162, 174, 180, 225, 261, 270, 290, 300, 324, 348, 349, 405, 435, 450, 522, 540, 580, 675, 698, 725, 783, 810, 870, 900, 1044, 1047, 1305, 1350, 1396, 1450, 1566, 1620, 1740, 1745, 2025, 2094, 2175, 2349, 2610, 2700, 2900, 3132, 3141, 3490, 3915, 4050, 4188, 4350, 4698, 5220, 5235, 6282, 6525, 6980, 7830, 8100, 8700, 8725, 9396, 9423, 10121, 10470, 11745, 12564, 13050, 15660, 15705, 17450, 18846, 19575, 20242, 20940, 23490, 26100, 26175, 28269, 30363, 31410, 34900, 37692, 39150, 40484, 46980, 47115, 50605, 52350, 56538, 58725, 60726, 62820, 78300, 78525, 91089, 94230, 101210, 104700, 113076, 117450, 121452, 141345, 151815, 157050, 182178, 188460, 202420, 234900, 235575, 253025, 273267, 282690, 303630, 314100, 364356, 455445, 471150, 506050, 546534, 565380, 607260, 706725, 759075, 819801, 910890, 942300, 1012100, 1093068, 1366335, 1413450, 1518150, 1639602, 1821780, 2277225, 2732670, 2826900, 3036300, 3279204, 4099005, 4554450, 5465340, 6831675, 8198010, 9108900, 13663350, 16396020, 20495025, 27326700, 40990050, 81980100]

約数ペア:

[(1, 81980100), (2, 40990050), (3, 27326700), (4, 20495025), (5, 16396020), (6, 13663350), (9, 9108900), (10, 8198010), (12, 6831675), (15, 5465340), (18, 4554450), (20, 4099005), (25, 3279204), (27, 3036300), (29, 2826900), (30, 2732670), (36, 2277225), (45, 1821780), (50, 1639602), (54, 1518150), (58, 1413450), (60, 1366335), (75, 1093068), (81, 1012100), (87, 942300), (90, 910890), (100, 819801), (108, 759075), (116, 706725), (135, 607260), (145, 565380), (150, 546534), (162, 506050), (174, 471150), (180, 455445), (225, 364356), (261, 314100), (270, 303630), (290, 282690), (300, 273267), (324, 253025), (348, 235575), (349, 234900), (405, 202420), (435, 188460), (450, 182178), (522, 157050), (540, 151815), (580, 141345), (675, 121452), (698, 117450), (725, 113076), (783, 104700), (810, 101210), (870, 94230), (900, 91089), (1044, 78525), (1047, 78300), (1305, 62820), (1350, 60726), (1396, 58725), (1450, 56538), (1566, 52350), (1620, 50605), (1740, 47115), (1745, 46980), (2025, 40484), (2094, 39150), (2175, 37692), (2349, 34900), (2610, 31410), (2700, 30363), (2900, 28269), (3132, 26175), (3141, 26100), (3490, 23490), (3915, 20940), (4050, 20242), (4188, 19575), (4350, 18846), (4698, 17450), (5220, 15705), (5235, 15660), (6282, 13050), (6525, 12564), (6980, 11745), (7830, 10470), (8100, 10121), (8700, 9423), (8725, 9396)]