420290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:134

約数の個数: 32

約数和(自身を含む): 843696

約数和(自身を除く): 423406

約数列:

[1, 2, 5, 10, 13, 26, 53, 61, 65, 106, 122, 130, 265, 305, 530, 610, 689, 793, 1378, 1586, 3233, 3445, 3965, 6466, 6890, 7930, 16165, 32330, 42029, 84058, 210145, 420290]

約数ペア:

[(1, 420290), (2, 210145), (5, 84058), (10, 42029), (13, 32330), (26, 16165), (53, 7930), (61, 6890), (65, 6466), (106, 3965), (122, 3445), (130, 3233), (265, 1586), (305, 1378), (530, 793), (610, 689)]