1640694580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{33199}}^1$

素因数の和:33568

約数の個数: 48

約数和(自身を含む): 3948940800

約数和(自身を除く): 2308246220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 353, 706, 1412, 1765, 2471, 3530, 4942, 7060, 9884, 12355, 24710, 33199, 49420, 66398, 132796, 165995, 232393, 331990, 464786, 663980, 929572, 1161965, 2323930, 4647860, 11719247, 23438494, 46876988, 58596235, 82034729, 117192470, 164069458, 234384940, 328138916, 410173645, 820347290, 1640694580]

約数ペア:

[(1, 1640694580), (2, 820347290), (4, 410173645), (5, 328138916), (7, 234384940), (10, 164069458), (14, 117192470), (20, 82034729), (28, 58596235), (35, 46876988), (70, 23438494), (140, 11719247), (353, 4647860), (706, 2323930), (1412, 1161965), (1765, 929572), (2471, 663980), (3530, 464786), (4942, 331990), (7060, 232393), (9884, 165995), (12355, 132796), (24710, 66398), (33199, 49420)]