642815880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{765257}}^1$

素因数の和:765278

約数の個数: 64

約数和(自身を含む): 2203943040

約数和(自身を除く): 1561127160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 765257, 1530514, 2295771, 3061028, 3826285, 4591542, 5356799, 6122056, 7652570, 9183084, 10713598, 11478855, 15305140, 16070397, 18366168, 21427196, 22957710, 26783995, 30610280, 32140794, 42854392, 45915420, 53567990, 64281588, 80351985, 91830840, 107135980, 128563176, 160703970, 214271960, 321407940, 642815880]

約数ペア:

[(1, 642815880), (2, 321407940), (3, 214271960), (4, 160703970), (5, 128563176), (6, 107135980), (7, 91830840), (8, 80351985), (10, 64281588), (12, 53567990), (14, 45915420), (15, 42854392), (20, 32140794), (21, 30610280), (24, 26783995), (28, 22957710), (30, 21427196), (35, 18366168), (40, 16070397), (42, 15305140), (56, 11478855), (60, 10713598), (70, 9183084), (84, 7652570), (105, 6122056), (120, 5356799), (140, 4591542), (168, 3826285), (210, 3061028), (280, 2295771), (420, 1530514), (840, 765257)]