665670440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{7561}}^1$

素因数の和:7674

約数の個数: 64

約数和(自身を含む): 1568056320

約数和(自身を除く): 902385880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 568, 620, 710, 1240, 1420, 2201, 2840, 4402, 7561, 8804, 11005, 15122, 17608, 22010, 30244, 37805, 44020, 60488, 75610, 88040, 151220, 234391, 302440, 468782, 536831, 937564, 1073662, 1171955, 1875128, 2147324, 2343910, 2684155, 4294648, 4687820, 5368310, 9375640, 10736620, 16641761, 21473240, 33283522, 66567044, 83208805, 133134088, 166417610, 332835220, 665670440]

約数ペア:

[(1, 665670440), (2, 332835220), (4, 166417610), (5, 133134088), (8, 83208805), (10, 66567044), (20, 33283522), (31, 21473240), (40, 16641761), (62, 10736620), (71, 9375640), (124, 5368310), (142, 4687820), (155, 4294648), (248, 2684155), (284, 2343910), (310, 2147324), (355, 1875128), (568, 1171955), (620, 1073662), (710, 937564), (1240, 536831), (1420, 468782), (2201, 302440), (2840, 234391), (4402, 151220), (7561, 88040), (8804, 75610), (11005, 60488), (15122, 44020), (17608, 37805), (22010, 30244)]