20964140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 45426528

約数和(自身を除く): 24462388

約数列:

[1, 2, 4, 5, 10, 20, 73, 83, 146, 166, 173, 292, 332, 346, 365, 415, 692, 730, 830, 865, 1460, 1660, 1730, 3460, 6059, 12118, 12629, 14359, 24236, 25258, 28718, 30295, 50516, 57436, 60590, 63145, 71795, 121180, 126290, 143590, 252580, 287180, 1048207, 2096414, 4192828, 5241035, 10482070, 20964140]

約数ペア:

[(1, 20964140), (2, 10482070), (4, 5241035), (5, 4192828), (10, 2096414), (20, 1048207), (73, 287180), (83, 252580), (146, 143590), (166, 126290), (173, 121180), (292, 71795), (332, 63145), (346, 60590), (365, 57436), (415, 50516), (692, 30295), (730, 28718), (830, 25258), (865, 24236), (1460, 14359), (1660, 12629), (1730, 12118), (3460, 6059)]