21495302660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{271}}^1\times {\mathrm{757}}^1$

素因数の和:1094

約数の個数: 144

約数和(自身を含む): 50709399552

約数和(自身を除く): 29214096892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 169, 260, 271, 310, 338, 403, 542, 620, 676, 757, 806, 845, 1084, 1355, 1514, 1612, 1690, 2015, 2710, 3028, 3380, 3523, 3785, 4030, 5239, 5420, 7046, 7570, 8060, 8401, 9841, 10478, 14092, 15140, 16802, 17615, 19682, 20956, 23467, 26195, 33604, 35230, 39364, 42005, 45799, 46934, 49205, 52390, 70460, 84010, 91598, 93868, 98410, 104780, 109213, 117335, 127933, 168020, 183196, 196820, 205147, 218426, 228995, 234670, 255866, 305071, 410294, 436852, 457990, 469340, 511732, 546065, 610142, 639665, 820588, 915980, 1025735, 1092130, 1220284, 1279330, 1419769, 1525355, 2051470, 2184260, 2558660, 2666911, 2839538, 3050710, 3965923, 4102940, 5333822, 5679076, 6101420, 6359557, 7098845, 7931846, 10667644, 12719114, 13334555, 14197690, 15863692, 19829615, 25438228, 26669110, 28395380, 31797785, 34669843, 39659230, 53338220, 63595570, 69339686, 79318460, 82674241, 127191140, 138679372, 165348482, 173349215, 330696964, 346698430, 413371205, 693396860, 826742410, 1074765133, 1653484820, 2149530266, 4299060532, 5373825665, 10747651330, 21495302660]

約数ペア:

[(1, 21495302660), (2, 10747651330), (4, 5373825665), (5, 4299060532), (10, 2149530266), (13, 1653484820), (20, 1074765133), (26, 826742410), (31, 693396860), (52, 413371205), (62, 346698430), (65, 330696964), (124, 173349215), (130, 165348482), (155, 138679372), (169, 127191140), (260, 82674241), (271, 79318460), (310, 69339686), (338, 63595570), (403, 53338220), (542, 39659230), (620, 34669843), (676, 31797785), (757, 28395380), (806, 26669110), (845, 25438228), (1084, 19829615), (1355, 15863692), (1514, 14197690), (1612, 13334555), (1690, 12719114), (2015, 10667644), (2710, 7931846), (3028, 7098845), (3380, 6359557), (3523, 6101420), (3785, 5679076), (4030, 5333822), (5239, 4102940), (5420, 3965923), (7046, 3050710), (7570, 2839538), (8060, 2666911), (8401, 2558660), (9841, 2184260), (10478, 2051470), (14092, 1525355), (15140, 1419769), (16802, 1279330), (17615, 1220284), (19682, 1092130), (20956, 1025735), (23467, 915980), (26195, 820588), (33604, 639665), (35230, 610142), (39364, 546065), (42005, 511732), (45799, 469340), (46934, 457990), (49205, 436852), (52390, 410294), (70460, 305071), (84010, 255866), (91598, 234670), (93868, 228995), (98410, 218426), (104780, 205147), (109213, 196820), (117335, 183196), (127933, 168020)]