25358920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{547}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 61156800

約数和(自身を除く): 35797880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 547, 610, 760, 1094, 1159, 1220, 2188, 2318, 2440, 2735, 4376, 4636, 5470, 5795, 9272, 10393, 10940, 11590, 20786, 21880, 23180, 33367, 41572, 46360, 51965, 66734, 83144, 103930, 133468, 166835, 207860, 266936, 333670, 415720, 633973, 667340, 1267946, 1334680, 2535892, 3169865, 5071784, 6339730, 12679460, 25358920]

約数ペア:

[(1, 25358920), (2, 12679460), (4, 6339730), (5, 5071784), (8, 3169865), (10, 2535892), (19, 1334680), (20, 1267946), (38, 667340), (40, 633973), (61, 415720), (76, 333670), (95, 266936), (122, 207860), (152, 166835), (190, 133468), (244, 103930), (305, 83144), (380, 66734), (488, 51965), (547, 46360), (610, 41572), (760, 33367), (1094, 23180), (1159, 21880), (1220, 20786), (2188, 11590), (2318, 10940), (2440, 10393), (2735, 9272), (4376, 5795), (4636, 5470)]