77938480

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15971}}^1$

素因数の和:16045

約数の個数: 40

約数和(自身を含む): 184189104

約数和(自身を除く): 106250624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 15971, 31942, 63884, 79855, 127768, 159710, 255536, 319420, 638840, 974231, 1277680, 1948462, 3896924, 4871155, 7793848, 9742310, 15587696, 19484620, 38969240, 77938480]

約数ペア:

[(1, 77938480), (2, 38969240), (4, 19484620), (5, 15587696), (8, 9742310), (10, 7793848), (16, 4871155), (20, 3896924), (40, 1948462), (61, 1277680), (80, 974231), (122, 638840), (244, 319420), (305, 255536), (488, 159710), (610, 127768), (976, 79855), (1220, 63884), (2440, 31942), (4880, 15971)]