128339900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{367}}^1$

素因数の和:663

約数の個数: 72

約数和(自身を含む): 301855680

約数和(自身を除く): 173515780

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 269, 325, 367, 538, 650, 734, 1076, 1300, 1345, 1468, 1835, 2690, 3497, 3670, 4771, 5380, 6725, 6994, 7340, 9175, 9542, 13450, 13988, 17485, 18350, 19084, 23855, 26900, 34970, 36700, 47710, 69940, 87425, 95420, 98723, 119275, 174850, 197446, 238550, 349700, 394892, 477100, 493615, 987230, 1283399, 1974460, 2468075, 2566798, 4936150, 5133596, 6416995, 9872300, 12833990, 25667980, 32084975, 64169950, 128339900]

約数ペア:

[(1, 128339900), (2, 64169950), (4, 32084975), (5, 25667980), (10, 12833990), (13, 9872300), (20, 6416995), (25, 5133596), (26, 4936150), (50, 2566798), (52, 2468075), (65, 1974460), (100, 1283399), (130, 987230), (260, 493615), (269, 477100), (325, 394892), (367, 349700), (538, 238550), (650, 197446), (734, 174850), (1076, 119275), (1300, 98723), (1345, 95420), (1468, 87425), (1835, 69940), (2690, 47710), (3497, 36700), (3670, 34970), (4771, 26900), (5380, 23855), (6725, 19084), (6994, 18350), (7340, 17485), (9175, 13988), (9542, 13450)]