18520020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3319}}^1$

素因数の和:3365

約数の個数: 72

約数和(自身を含む): 58007040

約数和(自身を除く): 39487020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3319, 5580, 6638, 9957, 13276, 16595, 19914, 29871, 33190, 39828, 49785, 59742, 66380, 99570, 102889, 119484, 149355, 199140, 205778, 298710, 308667, 411556, 514445, 597420, 617334, 926001, 1028890, 1234668, 1543335, 1852002, 2057780, 3086670, 3704004, 4630005, 6173340, 9260010, 18520020]

約数ペア:

[(1, 18520020), (2, 9260010), (3, 6173340), (4, 4630005), (5, 3704004), (6, 3086670), (9, 2057780), (10, 1852002), (12, 1543335), (15, 1234668), (18, 1028890), (20, 926001), (30, 617334), (31, 597420), (36, 514445), (45, 411556), (60, 308667), (62, 298710), (90, 205778), (93, 199140), (124, 149355), (155, 119484), (180, 102889), (186, 99570), (279, 66380), (310, 59742), (372, 49785), (465, 39828), (558, 33190), (620, 29871), (930, 19914), (1116, 16595), (1395, 13276), (1860, 9957), (2790, 6638), (3319, 5580)]