31697640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{521}}^1$

素因数の和:564

約数の個数: 144

約数和(自身を含む): 111765420

約数和(自身を除く): 80067780

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 312, 338, 360, 390, 468, 507, 520, 521, 585, 676, 780, 845, 936, 1014, 1042, 1170, 1352, 1521, 1560, 1563, 1690, 2028, 2084, 2340, 2535, 2605, 3042, 3126, 3380, 4056, 4168, 4680, 4689, 5070, 5210, 6084, 6252, 6760, 6773, 7605, 7815, 9378, 10140, 10420, 12168, 12504, 13546, 15210, 15630, 18756, 20280, 20319, 20840, 23445, 27092, 30420, 31260, 33865, 37512, 40638, 46890, 54184, 60840, 60957, 62520, 67730, 81276, 88049, 93780, 101595, 121914, 135460, 162552, 176098, 187560, 203190, 243828, 264147, 270920, 304785, 352196, 406380, 440245, 487656, 528294, 609570, 704392, 792441, 812760, 880490, 1056588, 1219140, 1320735, 1584882, 1760980, 2113176, 2438280, 2641470, 3169764, 3521960, 3962205, 5282940, 6339528, 7924410, 10565880, 15848820, 31697640]

約数ペア:

[(1, 31697640), (2, 15848820), (3, 10565880), (4, 7924410), (5, 6339528), (6, 5282940), (8, 3962205), (9, 3521960), (10, 3169764), (12, 2641470), (13, 2438280), (15, 2113176), (18, 1760980), (20, 1584882), (24, 1320735), (26, 1219140), (30, 1056588), (36, 880490), (39, 812760), (40, 792441), (45, 704392), (52, 609570), (60, 528294), (65, 487656), (72, 440245), (78, 406380), (90, 352196), (104, 304785), (117, 270920), (120, 264147), (130, 243828), (156, 203190), (169, 187560), (180, 176098), (195, 162552), (234, 135460), (260, 121914), (312, 101595), (338, 93780), (360, 88049), (390, 81276), (468, 67730), (507, 62520), (520, 60957), (521, 60840), (585, 54184), (676, 46890), (780, 40638), (845, 37512), (936, 33865), (1014, 31260), (1042, 30420), (1170, 27092), (1352, 23445), (1521, 20840), (1560, 20319), (1563, 20280), (1690, 18756), (2028, 15630), (2084, 15210), (2340, 13546), (2535, 12504), (2605, 12168), (3042, 10420), (3126, 10140), (3380, 9378), (4056, 7815), (4168, 7605), (4680, 6773), (4689, 6760), (5070, 6252), (5210, 6084)]