642850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:91

約数の個数: 48

約数和(自身を含む): 1374912

約数和(自身を除く): 732062

約数列:

[1, 2, 5, 10, 13, 23, 25, 26, 43, 46, 50, 65, 86, 115, 130, 215, 230, 299, 325, 430, 559, 575, 598, 650, 989, 1075, 1118, 1150, 1495, 1978, 2150, 2795, 2990, 4945, 5590, 7475, 9890, 12857, 13975, 14950, 24725, 25714, 27950, 49450, 64285, 128570, 321425, 642850]

約数ペア:

[(1, 642850), (2, 321425), (5, 128570), (10, 64285), (13, 49450), (23, 27950), (25, 25714), (26, 24725), (43, 14950), (46, 13975), (50, 12857), (65, 9890), (86, 7475), (115, 5590), (130, 4945), (215, 2990), (230, 2795), (299, 2150), (325, 1978), (430, 1495), (559, 1150), (575, 1118), (598, 1075), (650, 989)]