18858640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{653}}^1$

素因数の和:704

約数の個数: 60

約数和(自身を含む): 46346364

約数和(自身を除く): 27487724

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 653, 722, 760, 1306, 1444, 1520, 1805, 2612, 2888, 3265, 3610, 5224, 5776, 6530, 7220, 10448, 12407, 13060, 14440, 24814, 26120, 28880, 49628, 52240, 62035, 99256, 124070, 198512, 235733, 248140, 471466, 496280, 942932, 992560, 1178665, 1885864, 2357330, 3771728, 4714660, 9429320, 18858640]

約数ペア:

[(1, 18858640), (2, 9429320), (4, 4714660), (5, 3771728), (8, 2357330), (10, 1885864), (16, 1178665), (19, 992560), (20, 942932), (38, 496280), (40, 471466), (76, 248140), (80, 235733), (95, 198512), (152, 124070), (190, 99256), (304, 62035), (361, 52240), (380, 49628), (653, 28880), (722, 26120), (760, 24814), (1306, 14440), (1444, 13060), (1520, 12407), (1805, 10448), (2612, 7220), (2888, 6530), (3265, 5776), (3610, 5224)]