28357215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 64

約数和(自身を含む): 51148800

約数和(自身を除く): 22791585

約数列:

[1, 3, 5, 15, 19, 29, 47, 57, 73, 87, 95, 141, 145, 219, 235, 285, 365, 435, 551, 705, 893, 1095, 1363, 1387, 1653, 2117, 2679, 2755, 3431, 4089, 4161, 4465, 6351, 6815, 6935, 8265, 10293, 10585, 13395, 17155, 20445, 20805, 25897, 31755, 40223, 51465, 65189, 77691, 99499, 120669, 129485, 195567, 201115, 298497, 325945, 388455, 497495, 603345, 977835, 1492485, 1890481, 5671443, 9452405, 28357215]

約数ペア:

[(1, 28357215), (3, 9452405), (5, 5671443), (15, 1890481), (19, 1492485), (29, 977835), (47, 603345), (57, 497495), (73, 388455), (87, 325945), (95, 298497), (141, 201115), (145, 195567), (219, 129485), (235, 120669), (285, 99499), (365, 77691), (435, 65189), (551, 51465), (705, 40223), (893, 31755), (1095, 25897), (1363, 20805), (1387, 20445), (1653, 17155), (2117, 13395), (2679, 10585), (2755, 10293), (3431, 8265), (4089, 6935), (4161, 6815), (4465, 6351)]