20658638

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{607}}^1$

素因数の和:657

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 23467570

約数列:

[1, 2, 7, 11, 13, 14, 17, 22, 26, 34, 77, 91, 119, 143, 154, 182, 187, 221, 238, 286, 374, 442, 607, 1001, 1214, 1309, 1547, 2002, 2431, 2618, 3094, 4249, 4862, 6677, 7891, 8498, 10319, 13354, 15782, 17017, 20638, 34034, 46739, 55237, 72233, 86801, 93478, 110474, 113509, 134147, 144466, 173602, 227018, 268294, 607607, 794563, 939029, 1215214, 1475617, 1589126, 1878058, 2951234, 10329319, 20658638]

約数ペア:

[(1, 20658638), (2, 10329319), (7, 2951234), (11, 1878058), (13, 1589126), (14, 1475617), (17, 1215214), (22, 939029), (26, 794563), (34, 607607), (77, 268294), (91, 227018), (119, 173602), (143, 144466), (154, 134147), (182, 113509), (187, 110474), (221, 93478), (238, 86801), (286, 72233), (374, 55237), (442, 46739), (607, 34034), (1001, 20638), (1214, 17017), (1309, 15782), (1547, 13354), (2002, 10319), (2431, 8498), (2618, 7891), (3094, 6677), (4249, 4862)]