28206165

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 53544960

約数和(自身を除く): 25338795

約数列:

[1, 3, 5, 13, 15, 19, 23, 39, 57, 65, 69, 95, 115, 195, 247, 285, 299, 331, 345, 437, 741, 897, 993, 1235, 1311, 1495, 1655, 2185, 3705, 4303, 4485, 4965, 5681, 6289, 6555, 7613, 12909, 17043, 18867, 21515, 22839, 28405, 31445, 38065, 64545, 81757, 85215, 94335, 98969, 114195, 144647, 245271, 296907, 408785, 433941, 494845, 723235, 1226355, 1484535, 1880411, 2169705, 5641233, 9402055, 28206165]

約数ペア:

[(1, 28206165), (3, 9402055), (5, 5641233), (13, 2169705), (15, 1880411), (19, 1484535), (23, 1226355), (39, 723235), (57, 494845), (65, 433941), (69, 408785), (95, 296907), (115, 245271), (195, 144647), (247, 114195), (285, 98969), (299, 94335), (331, 85215), (345, 81757), (437, 64545), (741, 38065), (897, 31445), (993, 28405), (1235, 22839), (1311, 21515), (1495, 18867), (1655, 17043), (2185, 12909), (3705, 7613), (4303, 6555), (4485, 6289), (4965, 5681)]