19464075

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 38204400

約数和(自身を除く): 18740325

約数列:

[1, 3, 5, 9, 15, 19, 25, 29, 45, 57, 75, 87, 95, 145, 157, 171, 225, 261, 285, 435, 471, 475, 551, 725, 785, 855, 1305, 1413, 1425, 1653, 2175, 2355, 2755, 2983, 3925, 4275, 4553, 4959, 6525, 7065, 8265, 8949, 11775, 13659, 13775, 14915, 22765, 24795, 26847, 35325, 40977, 41325, 44745, 68295, 74575, 86507, 113825, 123975, 134235, 204885, 223725, 259521, 341475, 432535, 671175, 778563, 1024425, 1297605, 2162675, 3892815, 6488025, 19464075]

約数ペア:

[(1, 19464075), (3, 6488025), (5, 3892815), (9, 2162675), (15, 1297605), (19, 1024425), (25, 778563), (29, 671175), (45, 432535), (57, 341475), (75, 259521), (87, 223725), (95, 204885), (145, 134235), (157, 123975), (171, 113825), (225, 86507), (261, 74575), (285, 68295), (435, 44745), (471, 41325), (475, 40977), (551, 35325), (725, 26847), (785, 24795), (855, 22765), (1305, 14915), (1413, 13775), (1425, 13659), (1653, 11775), (2175, 8949), (2355, 8265), (2755, 7065), (2983, 6525), (3925, 4959), (4275, 4553)]