61218820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{977}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 139165488

約数和(自身を除く): 77946668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 482, 964, 977, 1205, 1954, 2410, 3133, 3908, 4820, 4885, 6266, 9770, 12532, 12701, 15665, 19540, 25402, 31330, 50804, 62660, 63505, 127010, 235457, 254020, 470914, 941828, 1177285, 2354570, 3060941, 4709140, 6121882, 12243764, 15304705, 30609410, 61218820]

約数ペア:

[(1, 61218820), (2, 30609410), (4, 15304705), (5, 12243764), (10, 6121882), (13, 4709140), (20, 3060941), (26, 2354570), (52, 1177285), (65, 941828), (130, 470914), (241, 254020), (260, 235457), (482, 127010), (964, 63505), (977, 62660), (1205, 50804), (1954, 31330), (2410, 25402), (3133, 19540), (3908, 15665), (4820, 12701), (4885, 12532), (6266, 9770)]