261899535

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 458006400

約数和(自身を除く): 196106865

約数列:

[1, 3, 5, 15, 17, 51, 61, 85, 113, 149, 183, 255, 305, 339, 447, 565, 745, 915, 1037, 1695, 1921, 2235, 2533, 3111, 5185, 5763, 6893, 7599, 9089, 9605, 12665, 15555, 16837, 20679, 27267, 28815, 34465, 37995, 45445, 50511, 84185, 103395, 117181, 136335, 154513, 252555, 286229, 351543, 463539, 585905, 772565, 858687, 1027057, 1431145, 1757715, 2317695, 3081171, 4293435, 5135285, 15405855, 17459969, 52379907, 87299845, 261899535]

約数ペア:

[(1, 261899535), (3, 87299845), (5, 52379907), (15, 17459969), (17, 15405855), (51, 5135285), (61, 4293435), (85, 3081171), (113, 2317695), (149, 1757715), (183, 1431145), (255, 1027057), (305, 858687), (339, 772565), (447, 585905), (565, 463539), (745, 351543), (915, 286229), (1037, 252555), (1695, 154513), (1921, 136335), (2235, 117181), (2533, 103395), (3111, 84185), (5185, 50511), (5763, 45445), (6893, 37995), (7599, 34465), (9089, 28815), (9605, 27267), (12665, 20679), (15555, 16837)]