28390275

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 55614000

約数和(自身を除く): 27223725

約数列:

[1, 3, 5, 9, 15, 19, 25, 29, 45, 57, 75, 87, 95, 145, 171, 225, 229, 261, 285, 435, 475, 551, 687, 725, 855, 1145, 1305, 1425, 1653, 2061, 2175, 2755, 3435, 4275, 4351, 4959, 5725, 6525, 6641, 8265, 10305, 13053, 13775, 17175, 19923, 21755, 24795, 33205, 39159, 41325, 51525, 59769, 65265, 99615, 108775, 123975, 126179, 166025, 195795, 298845, 326325, 378537, 498075, 630895, 978975, 1135611, 1494225, 1892685, 3154475, 5678055, 9463425, 28390275]

約数ペア:

[(1, 28390275), (3, 9463425), (5, 5678055), (9, 3154475), (15, 1892685), (19, 1494225), (25, 1135611), (29, 978975), (45, 630895), (57, 498075), (75, 378537), (87, 326325), (95, 298845), (145, 195795), (171, 166025), (225, 126179), (229, 123975), (261, 108775), (285, 99615), (435, 65265), (475, 59769), (551, 51525), (687, 41325), (725, 39159), (855, 33205), (1145, 24795), (1305, 21755), (1425, 19923), (1653, 17175), (2061, 13775), (2175, 13053), (2755, 10305), (3435, 8265), (4275, 6641), (4351, 6525), (4959, 5725)]