20872458

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 48470400

約数和(自身を除く): 27597942

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 86, 89, 101, 129, 178, 202, 258, 267, 303, 387, 534, 606, 774, 801, 909, 1161, 1602, 1818, 2322, 2403, 2727, 3827, 4343, 4806, 5454, 7654, 8686, 8989, 11481, 13029, 17978, 22962, 26058, 26967, 34443, 39087, 53934, 68886, 78174, 80901, 103329, 117261, 161802, 206658, 234522, 242703, 386527, 485406, 773054, 1159581, 2319162, 3478743, 6957486, 10436229, 20872458]

約数ペア:

[(1, 20872458), (2, 10436229), (3, 6957486), (6, 3478743), (9, 2319162), (18, 1159581), (27, 773054), (43, 485406), (54, 386527), (86, 242703), (89, 234522), (101, 206658), (129, 161802), (178, 117261), (202, 103329), (258, 80901), (267, 78174), (303, 68886), (387, 53934), (534, 39087), (606, 34443), (774, 26967), (801, 26058), (909, 22962), (1161, 17978), (1602, 13029), (1818, 11481), (2322, 8989), (2403, 8686), (2727, 7654), (3827, 5454), (4343, 4806)]