90108940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 96

約数和(自身を含む): 209018880

約数和(自身を除く): 118909940

約数列:

[1, 2, 4, 5, 10, 20, 23, 31, 46, 62, 71, 89, 92, 115, 124, 142, 155, 178, 230, 284, 310, 355, 356, 445, 460, 620, 710, 713, 890, 1420, 1426, 1633, 1780, 2047, 2201, 2759, 2852, 3266, 3565, 4094, 4402, 5518, 6319, 6532, 7130, 8165, 8188, 8804, 10235, 11005, 11036, 12638, 13795, 14260, 16330, 20470, 22010, 25276, 27590, 31595, 32660, 40940, 44020, 50623, 55180, 63190, 63457, 101246, 126380, 126914, 145337, 195889, 202492, 253115, 253828, 290674, 317285, 391778, 506230, 581348, 634570, 726685, 783556, 979445, 1012460, 1269140, 1453370, 1958890, 2906740, 3917780, 4505447, 9010894, 18021788, 22527235, 45054470, 90108940]

約数ペア:

[(1, 90108940), (2, 45054470), (4, 22527235), (5, 18021788), (10, 9010894), (20, 4505447), (23, 3917780), (31, 2906740), (46, 1958890), (62, 1453370), (71, 1269140), (89, 1012460), (92, 979445), (115, 783556), (124, 726685), (142, 634570), (155, 581348), (178, 506230), (230, 391778), (284, 317285), (310, 290674), (355, 253828), (356, 253115), (445, 202492), (460, 195889), (620, 145337), (710, 126914), (713, 126380), (890, 101246), (1420, 63457), (1426, 63190), (1633, 55180), (1780, 50623), (2047, 44020), (2201, 40940), (2759, 32660), (2852, 31595), (3266, 27590), (3565, 25276), (4094, 22010), (4402, 20470), (5518, 16330), (6319, 14260), (6532, 13795), (7130, 12638), (8165, 11036), (8188, 11005), (8804, 10235)]