21392280

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:690

約数の個数: 192

約数和(自身を含む): 85700160

約数和(自身を除く): 64307880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 117, 120, 126, 130, 140, 156, 168, 180, 182, 195, 210, 234, 252, 260, 273, 280, 312, 315, 360, 364, 390, 420, 455, 468, 504, 520, 546, 585, 630, 653, 728, 780, 819, 840, 910, 936, 1092, 1170, 1260, 1306, 1365, 1560, 1638, 1820, 1959, 2184, 2340, 2520, 2612, 2730, 3265, 3276, 3640, 3918, 4095, 4571, 4680, 5224, 5460, 5877, 6530, 6552, 7836, 8190, 8489, 9142, 9795, 10920, 11754, 13060, 13713, 15672, 16380, 16978, 18284, 19590, 22855, 23508, 25467, 26120, 27426, 29385, 32760, 33956, 36568, 39180, 41139, 42445, 45710, 47016, 50934, 54852, 58770, 59423, 67912, 68565, 76401, 78360, 82278, 84890, 91420, 101868, 109704, 117540, 118846, 127335, 137130, 152802, 164556, 169780, 178269, 182840, 203736, 205695, 235080, 237692, 254670, 274260, 297115, 305604, 329112, 339560, 356538, 382005, 411390, 475384, 509340, 534807, 548520, 594230, 611208, 713076, 764010, 822780, 891345, 1018680, 1069614, 1188460, 1426152, 1528020, 1645560, 1782690, 2139228, 2376920, 2674035, 3056040, 3565380, 4278456, 5348070, 7130760, 10696140, 21392280]

約数ペア:

[(1, 21392280), (2, 10696140), (3, 7130760), (4, 5348070), (5, 4278456), (6, 3565380), (7, 3056040), (8, 2674035), (9, 2376920), (10, 2139228), (12, 1782690), (13, 1645560), (14, 1528020), (15, 1426152), (18, 1188460), (20, 1069614), (21, 1018680), (24, 891345), (26, 822780), (28, 764010), (30, 713076), (35, 611208), (36, 594230), (39, 548520), (40, 534807), (42, 509340), (45, 475384), (52, 411390), (56, 382005), (60, 356538), (63, 339560), (65, 329112), (70, 305604), (72, 297115), (78, 274260), (84, 254670), (90, 237692), (91, 235080), (104, 205695), (105, 203736), (117, 182840), (120, 178269), (126, 169780), (130, 164556), (140, 152802), (156, 137130), (168, 127335), (180, 118846), (182, 117540), (195, 109704), (210, 101868), (234, 91420), (252, 84890), (260, 82278), (273, 78360), (280, 76401), (312, 68565), (315, 67912), (360, 59423), (364, 58770), (390, 54852), (420, 50934), (455, 47016), (468, 45710), (504, 42445), (520, 41139), (546, 39180), (585, 36568), (630, 33956), (653, 32760), (728, 29385), (780, 27426), (819, 26120), (840, 25467), (910, 23508), (936, 22855), (1092, 19590), (1170, 18284), (1260, 16978), (1306, 16380), (1365, 15672), (1560, 13713), (1638, 13060), (1820, 11754), (1959, 10920), (2184, 9795), (2340, 9142), (2520, 8489), (2612, 8190), (2730, 7836), (3265, 6552), (3276, 6530), (3640, 5877), (3918, 5460), (4095, 5224), (4571, 4680)]