639212290

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{14759}}^1$

素因数の和:14898

約数の個数: 32

約数和(自身を含む): 1185995520

約数和(自身を除く): 546783230

約数列:

[1, 2, 5, 10, 61, 71, 122, 142, 305, 355, 610, 710, 4331, 8662, 14759, 21655, 29518, 43310, 73795, 147590, 900299, 1047889, 1800598, 2095778, 4501495, 5239445, 9002990, 10478890, 63921229, 127842458, 319606145, 639212290]

約数ペア:

[(1, 639212290), (2, 319606145), (5, 127842458), (10, 63921229), (61, 10478890), (71, 9002990), (122, 5239445), (142, 4501495), (305, 2095778), (355, 1800598), (610, 1047889), (710, 900299), (4331, 147590), (8662, 73795), (14759, 43310), (21655, 29518)]