81220804

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{229}}^1\times {\mathrm{239}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 166924800

約数和(自身を除く): 85703996

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 229, 239, 371, 458, 478, 742, 916, 956, 1484, 1603, 1673, 3206, 3346, 6412, 6692, 12137, 12667, 24274, 25334, 48548, 50668, 54731, 84959, 88669, 109462, 169918, 177338, 218924, 339836, 354676, 383117, 766234, 1532468, 2900743, 5801486, 11602972, 20305201, 40610402, 81220804]

約数ペア:

[(1, 81220804), (2, 40610402), (4, 20305201), (7, 11602972), (14, 5801486), (28, 2900743), (53, 1532468), (106, 766234), (212, 383117), (229, 354676), (239, 339836), (371, 218924), (458, 177338), (478, 169918), (742, 109462), (916, 88669), (956, 84959), (1484, 54731), (1603, 50668), (1673, 48548), (3206, 25334), (3346, 24274), (6412, 12667), (6692, 12137)]