21379540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{691}}^1$

素因数の和:737

約数の個数: 96

約数和(自身を含む): 58593024

約数和(自身を除く): 37213484

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 170, 182, 221, 238, 260, 340, 364, 442, 455, 476, 595, 691, 884, 910, 1105, 1190, 1382, 1547, 1820, 2210, 2380, 2764, 3094, 3455, 4420, 4837, 6188, 6910, 7735, 8983, 9674, 11747, 13820, 15470, 17966, 19348, 23494, 24185, 30940, 35932, 44915, 46988, 48370, 58735, 62881, 82229, 89830, 96740, 117470, 125762, 152711, 164458, 179660, 234940, 251524, 305422, 314405, 328916, 411145, 610844, 628810, 763555, 822290, 1068977, 1257620, 1527110, 1644580, 2137954, 3054220, 4275908, 5344885, 10689770, 21379540]

約数ペア:

[(1, 21379540), (2, 10689770), (4, 5344885), (5, 4275908), (7, 3054220), (10, 2137954), (13, 1644580), (14, 1527110), (17, 1257620), (20, 1068977), (26, 822290), (28, 763555), (34, 628810), (35, 610844), (52, 411145), (65, 328916), (68, 314405), (70, 305422), (85, 251524), (91, 234940), (119, 179660), (130, 164458), (140, 152711), (170, 125762), (182, 117470), (221, 96740), (238, 89830), (260, 82229), (340, 62881), (364, 58735), (442, 48370), (455, 46988), (476, 44915), (595, 35932), (691, 30940), (884, 24185), (910, 23494), (1105, 19348), (1190, 17966), (1382, 15470), (1547, 13820), (1820, 11747), (2210, 9674), (2380, 8983), (2764, 7735), (3094, 6910), (3455, 6188), (4420, 4837)]