21381036340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1186517}}^1$

素因数の和:1186596

約数の個数: 48

約数和(自身を含む): 48438410832

約数和(自身を除く): 27057374492

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1802, 3604, 4505, 9010, 18020, 1186517, 2373034, 4746068, 5932585, 11865170, 20170789, 23730340, 40341578, 62885401, 80683156, 100853945, 125770802, 201707890, 251541604, 314427005, 403415780, 628854010, 1069051817, 1257708020, 2138103634, 4276207268, 5345259085, 10690518170, 21381036340]

約数ペア:

[(1, 21381036340), (2, 10690518170), (4, 5345259085), (5, 4276207268), (10, 2138103634), (17, 1257708020), (20, 1069051817), (34, 628854010), (53, 403415780), (68, 314427005), (85, 251541604), (106, 201707890), (170, 125770802), (212, 100853945), (265, 80683156), (340, 62885401), (530, 40341578), (901, 23730340), (1060, 20170789), (1802, 11865170), (3604, 5932585), (4505, 4746068), (9010, 2373034), (18020, 1186517)]