18490880

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:287

約数の個数: 80

約数和(自身を含む): 45961344

約数和(自身を除く): 27470464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 233, 248, 256, 310, 320, 466, 496, 512, 620, 640, 932, 992, 1165, 1240, 1280, 1864, 1984, 2330, 2480, 2560, 3728, 3968, 4660, 4960, 7223, 7456, 7936, 9320, 9920, 14446, 14912, 15872, 18640, 19840, 28892, 29824, 36115, 37280, 39680, 57784, 59648, 72230, 74560, 79360, 115568, 119296, 144460, 149120, 231136, 288920, 298240, 462272, 577840, 596480, 924544, 1155680, 1849088, 2311360, 3698176, 4622720, 9245440, 18490880]

約数ペア:

[(1, 18490880), (2, 9245440), (4, 4622720), (5, 3698176), (8, 2311360), (10, 1849088), (16, 1155680), (20, 924544), (31, 596480), (32, 577840), (40, 462272), (62, 298240), (64, 288920), (80, 231136), (124, 149120), (128, 144460), (155, 119296), (160, 115568), (233, 79360), (248, 74560), (256, 72230), (310, 59648), (320, 57784), (466, 39680), (496, 37280), (512, 36115), (620, 29824), (640, 28892), (932, 19840), (992, 18640), (1165, 15872), (1240, 14912), (1280, 14446), (1864, 9920), (1984, 9320), (2330, 7936), (2480, 7456), (2560, 7223), (3728, 4960), (3968, 4660)]