311918900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{421}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 703288320

約数和(自身を除く): 391369420

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 239, 310, 421, 478, 620, 775, 842, 956, 1195, 1550, 1684, 2105, 2390, 3100, 4210, 4780, 5975, 7409, 8420, 10525, 11950, 13051, 14818, 21050, 23900, 26102, 29636, 37045, 42100, 52204, 65255, 74090, 100619, 130510, 148180, 185225, 201238, 261020, 326275, 370450, 402476, 503095, 652550, 740900, 1006190, 1305100, 2012380, 2515475, 3119189, 5030950, 6238378, 10061900, 12476756, 15595945, 31191890, 62383780, 77979725, 155959450, 311918900]

約数ペア:

[(1, 311918900), (2, 155959450), (4, 77979725), (5, 62383780), (10, 31191890), (20, 15595945), (25, 12476756), (31, 10061900), (50, 6238378), (62, 5030950), (100, 3119189), (124, 2515475), (155, 2012380), (239, 1305100), (310, 1006190), (421, 740900), (478, 652550), (620, 503095), (775, 402476), (842, 370450), (956, 326275), (1195, 261020), (1550, 201238), (1684, 185225), (2105, 148180), (2390, 130510), (3100, 100619), (4210, 74090), (4780, 65255), (5975, 52204), (7409, 42100), (8420, 37045), (10525, 29636), (11950, 26102), (13051, 23900), (14818, 21050)]