20439450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{857}}^1$

素因数の和:928

約数の個数: 72

約数和(自身を含む): 56015388

約数和(自身を除く): 35575938

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 53, 75, 90, 106, 150, 159, 225, 265, 318, 450, 477, 530, 795, 857, 954, 1325, 1590, 1714, 2385, 2571, 2650, 3975, 4285, 4770, 5142, 7713, 7950, 8570, 11925, 12855, 15426, 21425, 23850, 25710, 38565, 42850, 45421, 64275, 77130, 90842, 128550, 136263, 192825, 227105, 272526, 385650, 408789, 454210, 681315, 817578, 1135525, 1362630, 2043945, 2271050, 3406575, 4087890, 6813150, 10219725, 20439450]

約数ペア:

[(1, 20439450), (2, 10219725), (3, 6813150), (5, 4087890), (6, 3406575), (9, 2271050), (10, 2043945), (15, 1362630), (18, 1135525), (25, 817578), (30, 681315), (45, 454210), (50, 408789), (53, 385650), (75, 272526), (90, 227105), (106, 192825), (150, 136263), (159, 128550), (225, 90842), (265, 77130), (318, 64275), (450, 45421), (477, 42850), (530, 38565), (795, 25710), (857, 23850), (954, 21425), (1325, 15426), (1590, 12855), (1714, 11925), (2385, 8570), (2571, 7950), (2650, 7713), (3975, 5142), (4285, 4770)]