21079740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 69471360

約数和(自身を除く): 48391620

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 19, 20, 22, 30, 33, 38, 41, 44, 55, 57, 60, 66, 76, 82, 95, 110, 114, 123, 132, 164, 165, 190, 205, 209, 220, 228, 246, 285, 330, 380, 410, 418, 451, 492, 570, 615, 627, 660, 779, 820, 836, 902, 1045, 1140, 1230, 1254, 1353, 1558, 1681, 1804, 2090, 2255, 2337, 2460, 2508, 2706, 3116, 3135, 3362, 3895, 4180, 4510, 4674, 5043, 5412, 6270, 6724, 6765, 7790, 8405, 8569, 9020, 9348, 10086, 11685, 12540, 13530, 15580, 16810, 17138, 18491, 20172, 23370, 25215, 25707, 27060, 31939, 33620, 34276, 36982, 42845, 46740, 50430, 51414, 55473, 63878, 73964, 85690, 92455, 95817, 100860, 102828, 110946, 127756, 128535, 159695, 171380, 184910, 191634, 221892, 257070, 277365, 319390, 351329, 369820, 383268, 479085, 514140, 554730, 638780, 702658, 958170, 1053987, 1109460, 1405316, 1756645, 1916340, 2107974, 3513290, 4215948, 5269935, 7026580, 10539870, 21079740]

約数ペア:

[(1, 21079740), (2, 10539870), (3, 7026580), (4, 5269935), (5, 4215948), (6, 3513290), (10, 2107974), (11, 1916340), (12, 1756645), (15, 1405316), (19, 1109460), (20, 1053987), (22, 958170), (30, 702658), (33, 638780), (38, 554730), (41, 514140), (44, 479085), (55, 383268), (57, 369820), (60, 351329), (66, 319390), (76, 277365), (82, 257070), (95, 221892), (110, 191634), (114, 184910), (123, 171380), (132, 159695), (164, 128535), (165, 127756), (190, 110946), (205, 102828), (209, 100860), (220, 95817), (228, 92455), (246, 85690), (285, 73964), (330, 63878), (380, 55473), (410, 51414), (418, 50430), (451, 46740), (492, 42845), (570, 36982), (615, 34276), (627, 33620), (660, 31939), (779, 27060), (820, 25707), (836, 25215), (902, 23370), (1045, 20172), (1140, 18491), (1230, 17138), (1254, 16810), (1353, 15580), (1558, 13530), (1681, 12540), (1804, 11685), (2090, 10086), (2255, 9348), (2337, 9020), (2460, 8569), (2508, 8405), (2706, 7790), (3116, 6765), (3135, 6724), (3362, 6270), (3895, 5412), (4180, 5043), (4510, 4674)]