19974968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 43092000

約数和(自身を除く): 23117032

約数列:

[1, 2, 4, 8, 13, 26, 29, 37, 52, 58, 74, 104, 116, 148, 179, 232, 296, 358, 377, 481, 716, 754, 962, 1073, 1432, 1508, 1924, 2146, 2327, 3016, 3848, 4292, 4654, 5191, 6623, 8584, 9308, 10382, 13246, 13949, 18616, 20764, 26492, 27898, 41528, 52984, 55796, 67483, 86099, 111592, 134966, 172198, 192067, 269932, 344396, 384134, 539864, 688792, 768268, 1536536, 2496871, 4993742, 9987484, 19974968]

約数ペア:

[(1, 19974968), (2, 9987484), (4, 4993742), (8, 2496871), (13, 1536536), (26, 768268), (29, 688792), (37, 539864), (52, 384134), (58, 344396), (74, 269932), (104, 192067), (116, 172198), (148, 134966), (179, 111592), (232, 86099), (296, 67483), (358, 55796), (377, 52984), (481, 41528), (716, 27898), (754, 26492), (962, 20764), (1073, 18616), (1432, 13949), (1508, 13246), (1924, 10382), (2146, 9308), (2327, 8584), (3016, 6623), (3848, 5191), (4292, 4654)]