138819980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 320905872

約数和(自身を除く): 182085892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 169, 260, 268, 335, 338, 613, 670, 676, 845, 871, 1226, 1340, 1690, 1742, 2452, 3065, 3380, 3484, 4355, 6130, 7969, 8710, 11323, 12260, 15938, 17420, 22646, 31876, 39845, 41071, 45292, 56615, 79690, 82142, 103597, 113230, 159380, 164284, 205355, 207194, 226460, 410710, 414388, 517985, 533923, 821420, 1035970, 1067846, 2071940, 2135692, 2669615, 5339230, 6940999, 10678460, 13881998, 27763996, 34704995, 69409990, 138819980]

約数ペア:

[(1, 138819980), (2, 69409990), (4, 34704995), (5, 27763996), (10, 13881998), (13, 10678460), (20, 6940999), (26, 5339230), (52, 2669615), (65, 2135692), (67, 2071940), (130, 1067846), (134, 1035970), (169, 821420), (260, 533923), (268, 517985), (335, 414388), (338, 410710), (613, 226460), (670, 207194), (676, 205355), (845, 164284), (871, 159380), (1226, 113230), (1340, 103597), (1690, 82142), (1742, 79690), (2452, 56615), (3065, 45292), (3380, 41071), (3484, 39845), (4355, 31876), (6130, 22646), (7969, 17420), (8710, 15938), (11323, 12260)]