28690725

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 56939808

約数和(自身を除く): 28249083

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 37, 49, 75, 105, 111, 147, 175, 185, 211, 245, 259, 525, 555, 633, 735, 777, 925, 1055, 1225, 1295, 1477, 1813, 2775, 3165, 3675, 3885, 4431, 5275, 5439, 6475, 7385, 7807, 9065, 10339, 15825, 19425, 22155, 23421, 27195, 31017, 36925, 39035, 45325, 51695, 54649, 110775, 117105, 135975, 155085, 163947, 195175, 258475, 273245, 382543, 585525, 775425, 819735, 1147629, 1366225, 1912715, 4098675, 5738145, 9563575, 28690725]

約数ペア:

[(1, 28690725), (3, 9563575), (5, 5738145), (7, 4098675), (15, 1912715), (21, 1366225), (25, 1147629), (35, 819735), (37, 775425), (49, 585525), (75, 382543), (105, 273245), (111, 258475), (147, 195175), (175, 163947), (185, 155085), (211, 135975), (245, 117105), (259, 110775), (525, 54649), (555, 51695), (633, 45325), (735, 39035), (777, 36925), (925, 31017), (1055, 27195), (1225, 23421), (1295, 22155), (1477, 19425), (1813, 15825), (2775, 10339), (3165, 9065), (3675, 7807), (3885, 7385), (4431, 6475), (5275, 5439)]