21239400

素因数分解:

$2^3\times 3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:428

約数の個数: 192

約数和(自身を含む): 81244800

約数和(自身を除く): 60005400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 25, 26, 28, 30, 35, 39, 40, 42, 50, 52, 56, 60, 65, 70, 75, 78, 84, 91, 100, 104, 105, 120, 130, 140, 150, 156, 168, 175, 182, 195, 200, 210, 260, 273, 280, 300, 312, 325, 350, 364, 389, 390, 420, 455, 520, 525, 546, 600, 650, 700, 728, 778, 780, 840, 910, 975, 1050, 1092, 1167, 1300, 1365, 1400, 1556, 1560, 1820, 1945, 1950, 2100, 2184, 2275, 2334, 2600, 2723, 2730, 3112, 3640, 3890, 3900, 4200, 4550, 4668, 5057, 5446, 5460, 5835, 6825, 7780, 7800, 8169, 9100, 9336, 9725, 10114, 10892, 10920, 11670, 13615, 13650, 15171, 15560, 16338, 18200, 19450, 20228, 21784, 23340, 25285, 27230, 27300, 29175, 30342, 32676, 35399, 38900, 40456, 40845, 46680, 50570, 54460, 54600, 58350, 60684, 65352, 68075, 70798, 75855, 77800, 81690, 101140, 106197, 108920, 116700, 121368, 126425, 136150, 141596, 151710, 163380, 176995, 202280, 204225, 212394, 233400, 252850, 272300, 283192, 303420, 326760, 353990, 379275, 408450, 424788, 505700, 530985, 544600, 606840, 707980, 758550, 816900, 849576, 884975, 1011400, 1061970, 1415960, 1517100, 1633800, 1769950, 2123940, 2654925, 3034200, 3539900, 4247880, 5309850, 7079800, 10619700, 21239400]

約数ペア:

[(1, 21239400), (2, 10619700), (3, 7079800), (4, 5309850), (5, 4247880), (6, 3539900), (7, 3034200), (8, 2654925), (10, 2123940), (12, 1769950), (13, 1633800), (14, 1517100), (15, 1415960), (20, 1061970), (21, 1011400), (24, 884975), (25, 849576), (26, 816900), (28, 758550), (30, 707980), (35, 606840), (39, 544600), (40, 530985), (42, 505700), (50, 424788), (52, 408450), (56, 379275), (60, 353990), (65, 326760), (70, 303420), (75, 283192), (78, 272300), (84, 252850), (91, 233400), (100, 212394), (104, 204225), (105, 202280), (120, 176995), (130, 163380), (140, 151710), (150, 141596), (156, 136150), (168, 126425), (175, 121368), (182, 116700), (195, 108920), (200, 106197), (210, 101140), (260, 81690), (273, 77800), (280, 75855), (300, 70798), (312, 68075), (325, 65352), (350, 60684), (364, 58350), (389, 54600), (390, 54460), (420, 50570), (455, 46680), (520, 40845), (525, 40456), (546, 38900), (600, 35399), (650, 32676), (700, 30342), (728, 29175), (778, 27300), (780, 27230), (840, 25285), (910, 23340), (975, 21784), (1050, 20228), (1092, 19450), (1167, 18200), (1300, 16338), (1365, 15560), (1400, 15171), (1556, 13650), (1560, 13615), (1820, 11670), (1945, 10920), (1950, 10892), (2100, 10114), (2184, 9725), (2275, 9336), (2334, 9100), (2600, 8169), (2723, 7800), (2730, 7780), (3112, 6825), (3640, 5835), (3890, 5460), (3900, 5446), (4200, 5057), (4550, 4668)]