7954820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 17463600

約数和(自身を除く): 9508780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 109, 164, 178, 205, 218, 356, 410, 436, 445, 545, 820, 890, 1090, 1780, 2180, 3649, 4469, 7298, 8938, 9701, 14596, 17876, 18245, 19402, 22345, 36490, 38804, 44690, 48505, 72980, 89380, 97010, 194020, 397741, 795482, 1590964, 1988705, 3977410, 7954820]

約数ペア:

[(1, 7954820), (2, 3977410), (4, 1988705), (5, 1590964), (10, 795482), (20, 397741), (41, 194020), (82, 97010), (89, 89380), (109, 72980), (164, 48505), (178, 44690), (205, 38804), (218, 36490), (356, 22345), (410, 19402), (436, 18245), (445, 17876), (545, 14596), (820, 9701), (890, 8938), (1090, 7298), (1780, 4469), (2180, 3649)]