21621500

素因数分解:

$2^2\times 5^3\times {\mathrm{83}}^1\times {\mathrm{521}}^1$

素因数の和:623

約数の個数: 48

約数和(自身を含む): 47882016

約数和(自身を除く): 26260516

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 125, 166, 250, 332, 415, 500, 521, 830, 1042, 1660, 2075, 2084, 2605, 4150, 5210, 8300, 10375, 10420, 13025, 20750, 26050, 41500, 43243, 52100, 65125, 86486, 130250, 172972, 216215, 260500, 432430, 864860, 1081075, 2162150, 4324300, 5405375, 10810750, 21621500]

約数ペア:

[(1, 21621500), (2, 10810750), (4, 5405375), (5, 4324300), (10, 2162150), (20, 1081075), (25, 864860), (50, 432430), (83, 260500), (100, 216215), (125, 172972), (166, 130250), (250, 86486), (332, 65125), (415, 52100), (500, 43243), (521, 41500), (830, 26050), (1042, 20750), (1660, 13025), (2075, 10420), (2084, 10375), (2605, 8300), (4150, 5210)]