403760240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{388231}}^1$

素因数の和:388257

約数の個数: 40

約数和(自身を含む): 1010956128

約数和(自身を除く): 607195888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 388231, 776462, 1552924, 1941155, 3105848, 3882310, 5047003, 6211696, 7764620, 10094006, 15529240, 20188012, 25235015, 31058480, 40376024, 50470030, 80752048, 100940060, 201880120, 403760240]

約数ペア:

[(1, 403760240), (2, 201880120), (4, 100940060), (5, 80752048), (8, 50470030), (10, 40376024), (13, 31058480), (16, 25235015), (20, 20188012), (26, 15529240), (40, 10094006), (52, 7764620), (65, 6211696), (80, 5047003), (104, 3882310), (130, 3105848), (208, 1941155), (260, 1552924), (520, 776462), (1040, 388231)]