21394620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 71914752

約数和(自身を除く): 50520132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 41, 45, 52, 60, 65, 78, 82, 90, 117, 123, 130, 156, 164, 180, 195, 205, 223, 234, 246, 260, 369, 390, 410, 446, 468, 492, 533, 585, 615, 669, 738, 780, 820, 892, 1066, 1115, 1170, 1230, 1338, 1476, 1599, 1845, 2007, 2132, 2230, 2340, 2460, 2665, 2676, 2899, 3198, 3345, 3690, 4014, 4460, 4797, 5330, 5798, 6396, 6690, 7380, 7995, 8028, 8697, 9143, 9594, 10035, 10660, 11596, 13380, 14495, 15990, 17394, 18286, 19188, 20070, 23985, 26091, 27429, 28990, 31980, 34788, 36572, 40140, 43485, 45715, 47970, 52182, 54858, 57980, 82287, 86970, 91430, 95940, 104364, 109716, 118859, 130455, 137145, 164574, 173940, 182860, 237718, 260910, 274290, 329148, 356577, 411435, 475436, 521820, 548580, 594295, 713154, 822870, 1069731, 1188590, 1426308, 1645740, 1782885, 2139462, 2377180, 3565770, 4278924, 5348655, 7131540, 10697310, 21394620]

約数ペア:

[(1, 21394620), (2, 10697310), (3, 7131540), (4, 5348655), (5, 4278924), (6, 3565770), (9, 2377180), (10, 2139462), (12, 1782885), (13, 1645740), (15, 1426308), (18, 1188590), (20, 1069731), (26, 822870), (30, 713154), (36, 594295), (39, 548580), (41, 521820), (45, 475436), (52, 411435), (60, 356577), (65, 329148), (78, 274290), (82, 260910), (90, 237718), (117, 182860), (123, 173940), (130, 164574), (156, 137145), (164, 130455), (180, 118859), (195, 109716), (205, 104364), (223, 95940), (234, 91430), (246, 86970), (260, 82287), (369, 57980), (390, 54858), (410, 52182), (446, 47970), (468, 45715), (492, 43485), (533, 40140), (585, 36572), (615, 34788), (669, 31980), (738, 28990), (780, 27429), (820, 26091), (892, 23985), (1066, 20070), (1115, 19188), (1170, 18286), (1230, 17394), (1338, 15990), (1476, 14495), (1599, 13380), (1845, 11596), (2007, 10660), (2132, 10035), (2230, 9594), (2340, 9143), (2460, 8697), (2665, 8028), (2676, 7995), (2899, 7380), (3198, 6690), (3345, 6396), (3690, 5798), (4014, 5330), (4460, 4797)]