15631980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 54966240

約数和(自身を除く): 39334260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 409, 420, 455, 490, 546, 588, 637, 735, 780, 818, 910, 980, 1092, 1227, 1274, 1365, 1470, 1636, 1820, 1911, 2045, 2454, 2548, 2730, 2863, 2940, 3185, 3822, 4090, 4908, 5317, 5460, 5726, 6135, 6370, 7644, 8180, 8589, 9555, 10634, 11452, 12270, 12740, 14315, 15951, 17178, 19110, 20041, 21268, 24540, 26585, 28630, 31902, 34356, 37219, 38220, 40082, 42945, 53170, 57260, 60123, 63804, 74438, 79755, 80164, 85890, 100205, 106340, 111657, 120246, 148876, 159510, 171780, 186095, 200410, 223314, 240492, 260533, 300615, 319020, 372190, 400820, 446628, 521066, 558285, 601230, 744380, 781599, 1042132, 1116570, 1202460, 1302665, 1563198, 2233140, 2605330, 3126396, 3907995, 5210660, 7815990, 15631980]

約数ペア:

[(1, 15631980), (2, 7815990), (3, 5210660), (4, 3907995), (5, 3126396), (6, 2605330), (7, 2233140), (10, 1563198), (12, 1302665), (13, 1202460), (14, 1116570), (15, 1042132), (20, 781599), (21, 744380), (26, 601230), (28, 558285), (30, 521066), (35, 446628), (39, 400820), (42, 372190), (49, 319020), (52, 300615), (60, 260533), (65, 240492), (70, 223314), (78, 200410), (84, 186095), (91, 171780), (98, 159510), (105, 148876), (130, 120246), (140, 111657), (147, 106340), (156, 100205), (182, 85890), (195, 80164), (196, 79755), (210, 74438), (245, 63804), (260, 60123), (273, 57260), (294, 53170), (364, 42945), (390, 40082), (409, 38220), (420, 37219), (455, 34356), (490, 31902), (546, 28630), (588, 26585), (637, 24540), (735, 21268), (780, 20041), (818, 19110), (910, 17178), (980, 15951), (1092, 14315), (1227, 12740), (1274, 12270), (1365, 11452), (1470, 10634), (1636, 9555), (1820, 8589), (1911, 8180), (2045, 7644), (2454, 6370), (2548, 6135), (2730, 5726), (2863, 5460), (2940, 5317), (3185, 4908), (3822, 4090)]