21392480

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:292

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 33765280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 152, 155, 160, 190, 227, 248, 304, 310, 380, 454, 496, 589, 608, 620, 760, 908, 992, 1135, 1178, 1240, 1520, 1816, 2270, 2356, 2480, 2945, 3040, 3632, 4313, 4540, 4712, 4960, 5890, 7037, 7264, 8626, 9080, 9424, 11780, 14074, 17252, 18160, 18848, 21565, 23560, 28148, 34504, 35185, 36320, 43130, 47120, 56296, 69008, 70370, 86260, 94240, 112592, 133703, 138016, 140740, 172520, 225184, 267406, 281480, 345040, 534812, 562960, 668515, 690080, 1069624, 1125920, 1337030, 2139248, 2674060, 4278496, 5348120, 10696240, 21392480]

約数ペア:

[(1, 21392480), (2, 10696240), (4, 5348120), (5, 4278496), (8, 2674060), (10, 2139248), (16, 1337030), (19, 1125920), (20, 1069624), (31, 690080), (32, 668515), (38, 562960), (40, 534812), (62, 345040), (76, 281480), (80, 267406), (95, 225184), (124, 172520), (152, 140740), (155, 138016), (160, 133703), (190, 112592), (227, 94240), (248, 86260), (304, 70370), (310, 69008), (380, 56296), (454, 47120), (496, 43130), (589, 36320), (608, 35185), (620, 34504), (760, 28148), (908, 23560), (992, 21565), (1135, 18848), (1178, 18160), (1240, 17252), (1520, 14074), (1816, 11780), (2270, 9424), (2356, 9080), (2480, 8626), (2945, 7264), (3040, 7037), (3632, 5890), (4313, 4960), (4540, 4712)]