20328100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:869

約数の個数: 72

約数和(自身を含む): 50066240

約数和(自身を除く): 29738140

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 823, 950, 988, 1235, 1300, 1646, 1900, 2470, 3292, 4115, 4940, 6175, 8230, 10699, 12350, 15637, 16460, 20575, 21398, 24700, 31274, 41150, 42796, 53495, 62548, 78185, 82300, 106990, 156370, 203281, 213980, 267475, 312740, 390925, 406562, 534950, 781850, 813124, 1016405, 1069900, 1563700, 2032810, 4065620, 5082025, 10164050, 20328100]

約数ペア:

[(1, 20328100), (2, 10164050), (4, 5082025), (5, 4065620), (10, 2032810), (13, 1563700), (19, 1069900), (20, 1016405), (25, 813124), (26, 781850), (38, 534950), (50, 406562), (52, 390925), (65, 312740), (76, 267475), (95, 213980), (100, 203281), (130, 156370), (190, 106990), (247, 82300), (260, 78185), (325, 62548), (380, 53495), (475, 42796), (494, 41150), (650, 31274), (823, 24700), (950, 21398), (988, 20575), (1235, 16460), (1300, 15637), (1646, 12350), (1900, 10699), (2470, 8230), (3292, 6175), (4115, 4940)]