251938240

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:390

約数の個数: 112

約数和(自身を含む): 627644160

約数和(自身を除く): 375705920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 109, 124, 155, 160, 218, 233, 248, 310, 320, 436, 466, 496, 545, 620, 872, 932, 992, 1090, 1165, 1240, 1744, 1864, 1984, 2180, 2330, 2480, 3379, 3488, 3728, 4360, 4660, 4960, 6758, 6976, 7223, 7456, 8720, 9320, 9920, 13516, 14446, 14912, 16895, 17440, 18640, 25397, 27032, 28892, 33790, 34880, 36115, 37280, 50794, 54064, 57784, 67580, 72230, 74560, 101588, 108128, 115568, 126985, 135160, 144460, 203176, 216256, 231136, 253970, 270320, 288920, 406352, 462272, 507940, 540640, 577840, 787307, 812704, 1015880, 1081280, 1155680, 1574614, 1625408, 2031760, 2311360, 3149228, 3936535, 4063520, 6298456, 7873070, 8127040, 12596912, 15746140, 25193824, 31492280, 50387648, 62984560, 125969120, 251938240]

約数ペア:

[(1, 251938240), (2, 125969120), (4, 62984560), (5, 50387648), (8, 31492280), (10, 25193824), (16, 15746140), (20, 12596912), (31, 8127040), (32, 7873070), (40, 6298456), (62, 4063520), (64, 3936535), (80, 3149228), (109, 2311360), (124, 2031760), (155, 1625408), (160, 1574614), (218, 1155680), (233, 1081280), (248, 1015880), (310, 812704), (320, 787307), (436, 577840), (466, 540640), (496, 507940), (545, 462272), (620, 406352), (872, 288920), (932, 270320), (992, 253970), (1090, 231136), (1165, 216256), (1240, 203176), (1744, 144460), (1864, 135160), (1984, 126985), (2180, 115568), (2330, 108128), (2480, 101588), (3379, 74560), (3488, 72230), (3728, 67580), (4360, 57784), (4660, 54064), (4960, 50794), (6758, 37280), (6976, 36115), (7223, 34880), (7456, 33790), (8720, 28892), (9320, 27032), (9920, 25397), (13516, 18640), (14446, 17440), (14912, 16895)]