20465640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4373}}^1$

素因数の和:4403

約数の個数: 96

約数和(自身を含む): 71646120

約数和(自身を除く): 51180480

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, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4373, 4680, 8746, 13119, 17492, 21865, 26238, 34984, 39357, 43730, 52476, 56849, 65595, 78714, 87460, 104952, 113698, 131190, 157428, 170547, 174920, 196785, 227396, 262380, 284245, 314856, 341094, 393570, 454792, 511641, 524760, 568490, 682188, 787140, 852735, 1023282, 1136980, 1364376, 1574280, 1705470, 2046564, 2273960, 2558205, 3410940, 4093128, 5116410, 6821880, 10232820, 20465640]

約数ペア:

[(1, 20465640), (2, 10232820), (3, 6821880), (4, 5116410), (5, 4093128), (6, 3410940), (8, 2558205), (9, 2273960), (10, 2046564), (12, 1705470), (13, 1574280), (15, 1364376), (18, 1136980), (20, 1023282), (24, 852735), (26, 787140), (30, 682188), (36, 568490), (39, 524760), (40, 511641), (45, 454792), (52, 393570), (60, 341094), (65, 314856), (72, 284245), (78, 262380), (90, 227396), (104, 196785), (117, 174920), (120, 170547), (130, 157428), (156, 131190), (180, 113698), (195, 104952), (234, 87460), (260, 78714), (312, 65595), (360, 56849), (390, 52476), (468, 43730), (520, 39357), (585, 34984), (780, 26238), (936, 21865), (1170, 17492), (1560, 13119), (2340, 8746), (4373, 4680)]