128302520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{52583}}^1$

素因数の和:52655

約数の個数: 32

約数和(自身を含む): 293418720

約数和(自身を除く): 165116200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 52583, 105166, 210332, 262915, 420664, 525830, 1051660, 2103320, 3207563, 6415126, 12830252, 16037815, 25660504, 32075630, 64151260, 128302520]

約数ペア:

[(1, 128302520), (2, 64151260), (4, 32075630), (5, 25660504), (8, 16037815), (10, 12830252), (20, 6415126), (40, 3207563), (61, 2103320), (122, 1051660), (244, 525830), (305, 420664), (488, 262915), (610, 210332), (1220, 105166), (2440, 52583)]