251155840

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30187}}^1$

素因数の和:30219

約数の個数: 64

約数和(自身を含む): 646626960

約数和(自身を除く): 395471120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 4160, 8320, 30187, 60374, 120748, 150935, 241496, 301870, 392431, 482992, 603740, 784862, 965984, 1207480, 1569724, 1931968, 1962155, 2414960, 3139448, 3863936, 3924310, 4829920, 6278896, 7848620, 9659840, 12557792, 15697240, 19319680, 25115584, 31394480, 50231168, 62788960, 125577920, 251155840]

約数ペア:

[(1, 251155840), (2, 125577920), (4, 62788960), (5, 50231168), (8, 31394480), (10, 25115584), (13, 19319680), (16, 15697240), (20, 12557792), (26, 9659840), (32, 7848620), (40, 6278896), (52, 4829920), (64, 3924310), (65, 3863936), (80, 3139448), (104, 2414960), (128, 1962155), (130, 1931968), (160, 1569724), (208, 1207480), (260, 965984), (320, 784862), (416, 603740), (520, 482992), (640, 392431), (832, 301870), (1040, 241496), (1664, 150935), (2080, 120748), (4160, 60374), (8320, 30187)]