20202260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 47345760

約数和(自身を除く): 27143500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 139, 169, 172, 215, 260, 278, 338, 430, 556, 559, 676, 695, 845, 860, 1118, 1390, 1690, 1807, 2236, 2780, 2795, 3380, 3614, 5590, 5977, 7228, 7267, 9035, 11180, 11954, 14534, 18070, 23491, 23908, 29068, 29885, 36140, 36335, 46982, 59770, 72670, 77701, 93964, 117455, 119540, 145340, 155402, 234910, 310804, 388505, 469820, 777010, 1010113, 1554020, 2020226, 4040452, 5050565, 10101130, 20202260]

約数ペア:

[(1, 20202260), (2, 10101130), (4, 5050565), (5, 4040452), (10, 2020226), (13, 1554020), (20, 1010113), (26, 777010), (43, 469820), (52, 388505), (65, 310804), (86, 234910), (130, 155402), (139, 145340), (169, 119540), (172, 117455), (215, 93964), (260, 77701), (278, 72670), (338, 59770), (430, 46982), (556, 36335), (559, 36140), (676, 29885), (695, 29068), (845, 23908), (860, 23491), (1118, 18070), (1390, 14534), (1690, 11954), (1807, 11180), (2236, 9035), (2780, 7267), (2795, 7228), (3380, 5977), (3614, 5590)]