18444380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 22198180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 419, 620, 710, 838, 1420, 1676, 2095, 2201, 4190, 4402, 8380, 8804, 11005, 12989, 22010, 25978, 29749, 44020, 51956, 59498, 64945, 118996, 129890, 148745, 259780, 297490, 594980, 922219, 1844438, 3688876, 4611095, 9222190, 18444380]

約数ペア:

[(1, 18444380), (2, 9222190), (4, 4611095), (5, 3688876), (10, 1844438), (20, 922219), (31, 594980), (62, 297490), (71, 259780), (124, 148745), (142, 129890), (155, 118996), (284, 64945), (310, 59498), (355, 51956), (419, 44020), (620, 29749), (710, 25978), (838, 22010), (1420, 12989), (1676, 11005), (2095, 8804), (2201, 8380), (4190, 4402)]