80440040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64871}}^1$

素因数の和:64913

約数の個数: 32

約数和(自身を含む): 186831360

約数和(自身を除く): 106391320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64871, 129742, 259484, 324355, 518968, 648710, 1297420, 2011001, 2594840, 4022002, 8044004, 10055005, 16088008, 20110010, 40220020, 80440040]

約数ペア:

[(1, 80440040), (2, 40220020), (4, 20110010), (5, 16088008), (8, 10055005), (10, 8044004), (20, 4022002), (31, 2594840), (40, 2011001), (62, 1297420), (124, 648710), (155, 518968), (248, 324355), (310, 259484), (620, 129742), (1240, 64871)]