28490215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:136

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 15055385

約数列:

[1, 5, 13, 17, 19, 23, 59, 65, 85, 95, 115, 221, 247, 295, 299, 323, 391, 437, 767, 1003, 1105, 1121, 1235, 1357, 1495, 1615, 1955, 2185, 3835, 4199, 5015, 5083, 5605, 5681, 6785, 7429, 13039, 14573, 17641, 19057, 20995, 23069, 25415, 25783, 28405, 37145, 65195, 72865, 88205, 95285, 96577, 115345, 128915, 247741, 299897, 335179, 438311, 482885, 1238705, 1499485, 1675895, 2191555, 5698043, 28490215]

約数ペア:

[(1, 28490215), (5, 5698043), (13, 2191555), (17, 1675895), (19, 1499485), (23, 1238705), (59, 482885), (65, 438311), (85, 335179), (95, 299897), (115, 247741), (221, 128915), (247, 115345), (295, 96577), (299, 95285), (323, 88205), (391, 72865), (437, 65195), (767, 37145), (1003, 28405), (1105, 25783), (1121, 25415), (1235, 23069), (1357, 20995), (1495, 19057), (1615, 17641), (1955, 14573), (2185, 13039), (3835, 7429), (4199, 6785), (5015, 5681), (5083, 5605)]