20351780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{293}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 24693724

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 151, 230, 293, 302, 460, 586, 604, 755, 1172, 1465, 1510, 2930, 3020, 3473, 5860, 6739, 6946, 13478, 13892, 17365, 26956, 33695, 34730, 44243, 67390, 69460, 88486, 134780, 176972, 221215, 442430, 884860, 1017589, 2035178, 4070356, 5087945, 10175890, 20351780]

約数ペア:

[(1, 20351780), (2, 10175890), (4, 5087945), (5, 4070356), (10, 2035178), (20, 1017589), (23, 884860), (46, 442430), (92, 221215), (115, 176972), (151, 134780), (230, 88486), (293, 69460), (302, 67390), (460, 44243), (586, 34730), (604, 33695), (755, 26956), (1172, 17365), (1465, 13892), (1510, 13478), (2930, 6946), (3020, 6739), (3473, 5860)]