8539880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 20321280

約数和(自身を除く): 11781400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 97, 124, 142, 155, 194, 248, 284, 310, 355, 388, 485, 568, 620, 710, 776, 970, 1240, 1420, 1940, 2201, 2840, 3007, 3880, 4402, 6014, 6887, 8804, 11005, 12028, 13774, 15035, 17608, 22010, 24056, 27548, 30070, 34435, 44020, 55096, 60140, 68870, 88040, 120280, 137740, 213497, 275480, 426994, 853988, 1067485, 1707976, 2134970, 4269940, 8539880]

約数ペア:

[(1, 8539880), (2, 4269940), (4, 2134970), (5, 1707976), (8, 1067485), (10, 853988), (20, 426994), (31, 275480), (40, 213497), (62, 137740), (71, 120280), (97, 88040), (124, 68870), (142, 60140), (155, 55096), (194, 44020), (248, 34435), (284, 30070), (310, 27548), (355, 24056), (388, 22010), (485, 17608), (568, 15035), (620, 13774), (710, 12028), (776, 11005), (970, 8804), (1240, 6887), (1420, 6014), (1940, 4402), (2201, 3880), (2840, 3007)]