21706920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 128

約数和(自身を含む): 73440000

約数和(自身を除く): 51733080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 101, 108, 120, 135, 180, 199, 202, 216, 270, 303, 360, 398, 404, 505, 540, 597, 606, 796, 808, 909, 995, 1010, 1080, 1194, 1212, 1515, 1592, 1791, 1818, 1990, 2020, 2388, 2424, 2727, 2985, 3030, 3582, 3636, 3980, 4040, 4545, 4776, 5373, 5454, 5970, 6060, 7164, 7272, 7960, 8955, 9090, 10746, 10908, 11940, 12120, 13635, 14328, 17910, 18180, 20099, 21492, 21816, 23880, 26865, 27270, 35820, 36360, 40198, 42984, 53730, 54540, 60297, 71640, 80396, 100495, 107460, 109080, 120594, 160792, 180891, 200990, 214920, 241188, 301485, 361782, 401980, 482376, 542673, 602970, 723564, 803960, 904455, 1085346, 1205940, 1447128, 1808910, 2170692, 2411880, 2713365, 3617820, 4341384, 5426730, 7235640, 10853460, 21706920]

約数ペア:

[(1, 21706920), (2, 10853460), (3, 7235640), (4, 5426730), (5, 4341384), (6, 3617820), (8, 2713365), (9, 2411880), (10, 2170692), (12, 1808910), (15, 1447128), (18, 1205940), (20, 1085346), (24, 904455), (27, 803960), (30, 723564), (36, 602970), (40, 542673), (45, 482376), (54, 401980), (60, 361782), (72, 301485), (90, 241188), (101, 214920), (108, 200990), (120, 180891), (135, 160792), (180, 120594), (199, 109080), (202, 107460), (216, 100495), (270, 80396), (303, 71640), (360, 60297), (398, 54540), (404, 53730), (505, 42984), (540, 40198), (597, 36360), (606, 35820), (796, 27270), (808, 26865), (909, 23880), (995, 21816), (1010, 21492), (1080, 20099), (1194, 18180), (1212, 17910), (1515, 14328), (1592, 13635), (1791, 12120), (1818, 11940), (1990, 10908), (2020, 10746), (2388, 9090), (2424, 8955), (2727, 7960), (2985, 7272), (3030, 7164), (3582, 6060), (3636, 5970), (3980, 5454), (4040, 5373), (4545, 4776)]