1640802760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1\times {\mathrm{571}}^1$

素因数の和:819

約数の個数: 96

約数和(自身を含む): 3922776000

約数和(自身を除く): 2281973240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 199, 361, 380, 398, 571, 722, 760, 796, 995, 1142, 1444, 1592, 1805, 1990, 2284, 2855, 2888, 3610, 3781, 3980, 4568, 5710, 7220, 7562, 7960, 10849, 11420, 14440, 15124, 18905, 21698, 22840, 30248, 37810, 43396, 54245, 71839, 75620, 86792, 108490, 113629, 143678, 151240, 206131, 216980, 227258, 287356, 359195, 412262, 433960, 454516, 568145, 574712, 718390, 824524, 909032, 1030655, 1136290, 1436780, 1649048, 2061310, 2158951, 2272580, 2873560, 4122620, 4317902, 4545160, 8245240, 8635804, 10794755, 17271608, 21589510, 41020069, 43179020, 82040138, 86358040, 164080276, 205100345, 328160552, 410200690, 820401380, 1640802760]

約数ペア:

[(1, 1640802760), (2, 820401380), (4, 410200690), (5, 328160552), (8, 205100345), (10, 164080276), (19, 86358040), (20, 82040138), (38, 43179020), (40, 41020069), (76, 21589510), (95, 17271608), (152, 10794755), (190, 8635804), (199, 8245240), (361, 4545160), (380, 4317902), (398, 4122620), (571, 2873560), (722, 2272580), (760, 2158951), (796, 2061310), (995, 1649048), (1142, 1436780), (1444, 1136290), (1592, 1030655), (1805, 909032), (1990, 824524), (2284, 718390), (2855, 574712), (2888, 568145), (3610, 454516), (3781, 433960), (3980, 412262), (4568, 359195), (5710, 287356), (7220, 227258), (7562, 216980), (7960, 206131), (10849, 151240), (11420, 143678), (14440, 113629), (15124, 108490), (18905, 86792), (21698, 75620), (22840, 71839), (30248, 54245), (37810, 43396)]