21259320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 128

約数和(自身を含む): 68040000

約数和(自身を除く): 46780680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 41, 58, 60, 82, 87, 116, 120, 123, 145, 149, 164, 174, 205, 232, 246, 290, 298, 328, 348, 410, 435, 447, 492, 580, 596, 615, 696, 745, 820, 870, 894, 984, 1160, 1189, 1192, 1230, 1490, 1640, 1740, 1788, 2235, 2378, 2460, 2980, 3480, 3567, 3576, 4321, 4470, 4756, 4920, 5945, 5960, 6109, 7134, 8642, 8940, 9512, 11890, 12218, 12963, 14268, 17284, 17835, 17880, 18327, 21605, 23780, 24436, 25926, 28536, 30545, 34568, 35670, 36654, 43210, 47560, 48872, 51852, 61090, 64815, 71340, 73308, 86420, 91635, 103704, 122180, 129630, 142680, 146616, 172840, 177161, 183270, 244360, 259260, 354322, 366540, 518520, 531483, 708644, 733080, 885805, 1062966, 1417288, 1771610, 2125932, 2657415, 3543220, 4251864, 5314830, 7086440, 10629660, 21259320]

約数ペア:

[(1, 21259320), (2, 10629660), (3, 7086440), (4, 5314830), (5, 4251864), (6, 3543220), (8, 2657415), (10, 2125932), (12, 1771610), (15, 1417288), (20, 1062966), (24, 885805), (29, 733080), (30, 708644), (40, 531483), (41, 518520), (58, 366540), (60, 354322), (82, 259260), (87, 244360), (116, 183270), (120, 177161), (123, 172840), (145, 146616), (149, 142680), (164, 129630), (174, 122180), (205, 103704), (232, 91635), (246, 86420), (290, 73308), (298, 71340), (328, 64815), (348, 61090), (410, 51852), (435, 48872), (447, 47560), (492, 43210), (580, 36654), (596, 35670), (615, 34568), (696, 30545), (745, 28536), (820, 25926), (870, 24436), (894, 23780), (984, 21605), (1160, 18327), (1189, 17880), (1192, 17835), (1230, 17284), (1490, 14268), (1640, 12963), (1740, 12218), (1788, 11890), (2235, 9512), (2378, 8940), (2460, 8642), (2980, 7134), (3480, 6109), (3567, 5960), (3576, 5945), (4321, 4920), (4470, 4756)]