20875908

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 52913280

約数和(自身を除く): 32037372

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 61, 76, 79, 114, 122, 158, 183, 228, 237, 244, 316, 361, 366, 474, 722, 732, 948, 1083, 1159, 1444, 1501, 2166, 2318, 3002, 3477, 4332, 4503, 4636, 4819, 6004, 6954, 9006, 9638, 13908, 14457, 18012, 19276, 22021, 28519, 28914, 44042, 57038, 57828, 66063, 85557, 88084, 91561, 114076, 132126, 171114, 183122, 264252, 274683, 342228, 366244, 549366, 1098732, 1739659, 3479318, 5218977, 6958636, 10437954, 20875908]

約数ペア:

[(1, 20875908), (2, 10437954), (3, 6958636), (4, 5218977), (6, 3479318), (12, 1739659), (19, 1098732), (38, 549366), (57, 366244), (61, 342228), (76, 274683), (79, 264252), (114, 183122), (122, 171114), (158, 132126), (183, 114076), (228, 91561), (237, 88084), (244, 85557), (316, 66063), (361, 57828), (366, 57038), (474, 44042), (722, 28914), (732, 28519), (948, 22021), (1083, 19276), (1159, 18012), (1444, 14457), (1501, 13908), (2166, 9638), (2318, 9006), (3002, 6954), (3477, 6004), (4332, 4819), (4503, 4636)]