17123780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 20615740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 389, 620, 710, 778, 1420, 1556, 1945, 2201, 3890, 4402, 7780, 8804, 11005, 12059, 22010, 24118, 27619, 44020, 48236, 55238, 60295, 110476, 120590, 138095, 241180, 276190, 552380, 856189, 1712378, 3424756, 4280945, 8561890, 17123780]

約数ペア:

[(1, 17123780), (2, 8561890), (4, 4280945), (5, 3424756), (10, 1712378), (20, 856189), (31, 552380), (62, 276190), (71, 241180), (124, 138095), (142, 120590), (155, 110476), (284, 60295), (310, 55238), (355, 48236), (389, 44020), (620, 27619), (710, 24118), (778, 22010), (1420, 12059), (1556, 11005), (1945, 8804), (2201, 7780), (3890, 4402)]