20902128

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:127

約数の個数: 160

約数和(自身を含む): 64162560

約数和(自身を除く): 43260432

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 38, 39, 41, 43, 48, 52, 57, 76, 78, 82, 86, 104, 114, 123, 129, 152, 156, 164, 172, 208, 228, 246, 247, 258, 304, 312, 328, 344, 456, 492, 494, 516, 533, 559, 624, 656, 688, 741, 779, 817, 912, 984, 988, 1032, 1066, 1118, 1482, 1558, 1599, 1634, 1677, 1763, 1968, 1976, 2064, 2132, 2236, 2337, 2451, 2964, 3116, 3198, 3268, 3354, 3526, 3952, 4264, 4472, 4674, 4902, 5289, 5928, 6232, 6396, 6536, 6708, 7052, 8528, 8944, 9348, 9804, 10127, 10578, 10621, 11856, 12464, 12792, 13072, 13416, 14104, 18696, 19608, 20254, 21156, 21242, 22919, 25584, 26832, 28208, 30381, 31863, 33497, 37392, 39216, 40508, 42312, 42484, 45838, 60762, 63726, 66994, 68757, 81016, 84624, 84968, 91676, 100491, 121524, 127452, 133988, 137514, 162032, 169936, 183352, 200982, 243048, 254904, 267976, 275028, 366704, 401964, 435461, 486096, 509808, 535952, 550056, 803928, 870922, 1100112, 1306383, 1607856, 1741844, 2612766, 3483688, 5225532, 6967376, 10451064, 20902128]

約数ペア:

[(1, 20902128), (2, 10451064), (3, 6967376), (4, 5225532), (6, 3483688), (8, 2612766), (12, 1741844), (13, 1607856), (16, 1306383), (19, 1100112), (24, 870922), (26, 803928), (38, 550056), (39, 535952), (41, 509808), (43, 486096), (48, 435461), (52, 401964), (57, 366704), (76, 275028), (78, 267976), (82, 254904), (86, 243048), (104, 200982), (114, 183352), (123, 169936), (129, 162032), (152, 137514), (156, 133988), (164, 127452), (172, 121524), (208, 100491), (228, 91676), (246, 84968), (247, 84624), (258, 81016), (304, 68757), (312, 66994), (328, 63726), (344, 60762), (456, 45838), (492, 42484), (494, 42312), (516, 40508), (533, 39216), (559, 37392), (624, 33497), (656, 31863), (688, 30381), (741, 28208), (779, 26832), (817, 25584), (912, 22919), (984, 21242), (988, 21156), (1032, 20254), (1066, 19608), (1118, 18696), (1482, 14104), (1558, 13416), (1599, 13072), (1634, 12792), (1677, 12464), (1763, 11856), (1968, 10621), (1976, 10578), (2064, 10127), (2132, 9804), (2236, 9348), (2337, 8944), (2451, 8528), (2964, 7052), (3116, 6708), (3198, 6536), (3268, 6396), (3354, 6232), (3526, 5928), (3952, 5289), (4264, 4902), (4472, 4674)]