319956520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{1181}}^1$

素因数の和:1726

約数の個数: 64

約数和(自身を含む): 777425040

約数和(自身を除く): 457468520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 521, 1042, 1181, 2084, 2362, 2605, 4168, 4724, 5210, 5905, 6773, 9448, 10420, 11810, 13546, 15353, 20840, 23620, 27092, 30706, 33865, 47240, 54184, 61412, 67730, 76765, 122824, 135460, 153530, 270920, 307060, 614120, 615301, 1230602, 2461204, 3076505, 4922408, 6153010, 7998913, 12306020, 15997826, 24612040, 31995652, 39994565, 63991304, 79989130, 159978260, 319956520]

約数ペア:

[(1, 319956520), (2, 159978260), (4, 79989130), (5, 63991304), (8, 39994565), (10, 31995652), (13, 24612040), (20, 15997826), (26, 12306020), (40, 7998913), (52, 6153010), (65, 4922408), (104, 3076505), (130, 2461204), (260, 1230602), (520, 615301), (521, 614120), (1042, 307060), (1181, 270920), (2084, 153530), (2362, 135460), (2605, 122824), (4168, 76765), (4724, 67730), (5210, 61412), (5905, 54184), (6773, 47240), (9448, 33865), (10420, 30706), (11810, 27092), (13546, 23620), (15353, 20840)]