20372560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1031}}^1$

素因数の和:1076

約数の個数: 80

約数和(自身を含む): 53746560

約数和(自身を除く): 33374000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1031, 1040, 1235, 1520, 1976, 2062, 2470, 3952, 4124, 4940, 5155, 8248, 9880, 10310, 13403, 16496, 19589, 19760, 20620, 26806, 39178, 41240, 53612, 67015, 78356, 82480, 97945, 107224, 134030, 156712, 195890, 214448, 254657, 268060, 313424, 391780, 509314, 536120, 783560, 1018628, 1072240, 1273285, 1567120, 2037256, 2546570, 4074512, 5093140, 10186280, 20372560]

約数ペア:

[(1, 20372560), (2, 10186280), (4, 5093140), (5, 4074512), (8, 2546570), (10, 2037256), (13, 1567120), (16, 1273285), (19, 1072240), (20, 1018628), (26, 783560), (38, 536120), (40, 509314), (52, 391780), (65, 313424), (76, 268060), (80, 254657), (95, 214448), (104, 195890), (130, 156712), (152, 134030), (190, 107224), (208, 97945), (247, 82480), (260, 78356), (304, 67015), (380, 53612), (494, 41240), (520, 39178), (760, 26806), (988, 20620), (1031, 19760), (1040, 19589), (1235, 16496), (1520, 13403), (1976, 10310), (2062, 9880), (2470, 8248), (3952, 5155), (4124, 4940)]