18008440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 43623360

約数和(自身を除く): 25614920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 71, 85, 136, 142, 170, 284, 340, 355, 373, 568, 680, 710, 746, 1207, 1420, 1492, 1865, 2414, 2840, 2984, 3730, 4828, 6035, 6341, 7460, 9656, 12070, 12682, 14920, 24140, 25364, 26483, 31705, 48280, 50728, 52966, 63410, 105932, 126820, 132415, 211864, 253640, 264830, 450211, 529660, 900422, 1059320, 1800844, 2251055, 3601688, 4502110, 9004220, 18008440]

約数ペア:

[(1, 18008440), (2, 9004220), (4, 4502110), (5, 3601688), (8, 2251055), (10, 1800844), (17, 1059320), (20, 900422), (34, 529660), (40, 450211), (68, 264830), (71, 253640), (85, 211864), (136, 132415), (142, 126820), (170, 105932), (284, 63410), (340, 52966), (355, 50728), (373, 48280), (568, 31705), (680, 26483), (710, 25364), (746, 24140), (1207, 14920), (1420, 12682), (1492, 12070), (1865, 9656), (2414, 7460), (2840, 6341), (2984, 6035), (3730, 4828)]