21589020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:172

約数の個数: 144

約数和(自身を含む): 69818112

約数和(自身を除く): 48229092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 53, 60, 62, 73, 90, 93, 106, 124, 146, 155, 159, 180, 186, 212, 219, 265, 279, 292, 310, 318, 365, 372, 438, 465, 477, 530, 558, 620, 636, 657, 730, 795, 876, 930, 954, 1060, 1095, 1116, 1314, 1395, 1460, 1590, 1643, 1860, 1908, 2190, 2263, 2385, 2628, 2790, 3180, 3285, 3286, 3869, 4380, 4526, 4770, 4929, 5580, 6570, 6572, 6789, 7738, 8215, 9052, 9540, 9858, 11315, 11607, 13140, 13578, 14787, 15476, 16430, 19345, 19716, 20367, 22630, 23214, 24645, 27156, 29574, 32860, 33945, 34821, 38690, 40734, 45260, 46428, 49290, 58035, 59148, 67890, 69642, 73935, 77380, 81468, 98580, 101835, 116070, 119939, 135780, 139284, 147870, 174105, 203670, 232140, 239878, 295740, 348210, 359817, 407340, 479756, 599695, 696420, 719634, 1079451, 1199390, 1439268, 1799085, 2158902, 2398780, 3598170, 4317804, 5397255, 7196340, 10794510, 21589020]

約数ペア:

[(1, 21589020), (2, 10794510), (3, 7196340), (4, 5397255), (5, 4317804), (6, 3598170), (9, 2398780), (10, 2158902), (12, 1799085), (15, 1439268), (18, 1199390), (20, 1079451), (30, 719634), (31, 696420), (36, 599695), (45, 479756), (53, 407340), (60, 359817), (62, 348210), (73, 295740), (90, 239878), (93, 232140), (106, 203670), (124, 174105), (146, 147870), (155, 139284), (159, 135780), (180, 119939), (186, 116070), (212, 101835), (219, 98580), (265, 81468), (279, 77380), (292, 73935), (310, 69642), (318, 67890), (365, 59148), (372, 58035), (438, 49290), (465, 46428), (477, 45260), (530, 40734), (558, 38690), (620, 34821), (636, 33945), (657, 32860), (730, 29574), (795, 27156), (876, 24645), (930, 23214), (954, 22630), (1060, 20367), (1095, 19716), (1116, 19345), (1314, 16430), (1395, 15476), (1460, 14787), (1590, 13578), (1643, 13140), (1860, 11607), (1908, 11315), (2190, 9858), (2263, 9540), (2385, 9052), (2628, 8215), (2790, 7738), (3180, 6789), (3285, 6572), (3286, 6570), (3869, 5580), (4380, 4929), (4526, 4770)]