28860525

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 56033120

約数和(自身を除く): 27172595

約数列:

[1, 3, 5, 9, 15, 19, 25, 43, 45, 57, 75, 95, 129, 157, 171, 215, 225, 285, 387, 471, 475, 645, 785, 817, 855, 1075, 1413, 1425, 1935, 2355, 2451, 2983, 3225, 3925, 4085, 4275, 6751, 7065, 7353, 8949, 9675, 11775, 12255, 14915, 20253, 20425, 26847, 33755, 35325, 36765, 44745, 60759, 61275, 74575, 101265, 128269, 134235, 168775, 183825, 223725, 303795, 384807, 506325, 641345, 671175, 1154421, 1518975, 1924035, 3206725, 5772105, 9620175, 28860525]

約数ペア:

[(1, 28860525), (3, 9620175), (5, 5772105), (9, 3206725), (15, 1924035), (19, 1518975), (25, 1154421), (43, 671175), (45, 641345), (57, 506325), (75, 384807), (95, 303795), (129, 223725), (157, 183825), (171, 168775), (215, 134235), (225, 128269), (285, 101265), (387, 74575), (471, 61275), (475, 60759), (645, 44745), (785, 36765), (817, 35325), (855, 33755), (1075, 26847), (1413, 20425), (1425, 20253), (1935, 14915), (2355, 12255), (2451, 11775), (2983, 9675), (3225, 8949), (3925, 7353), (4085, 7065), (4275, 6751)]