28038725

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:99

約数の個数: 72

約数和(自身を含む): 44330496

約数和(自身を除く): 16291771

約数列:

[1, 5, 11, 13, 23, 25, 31, 55, 65, 115, 121, 143, 155, 253, 275, 299, 325, 341, 403, 575, 605, 713, 715, 775, 1265, 1495, 1573, 1705, 2015, 2783, 3025, 3289, 3565, 3575, 3751, 4433, 6325, 7475, 7843, 7865, 8525, 9269, 10075, 13915, 16445, 17825, 18755, 22165, 36179, 39215, 39325, 46345, 48763, 69575, 82225, 86273, 93775, 101959, 110825, 180895, 196075, 231725, 243815, 431365, 509795, 904475, 1121549, 1219075, 2156825, 2548975, 5607745, 28038725]

約数ペア:

[(1, 28038725), (5, 5607745), (11, 2548975), (13, 2156825), (23, 1219075), (25, 1121549), (31, 904475), (55, 509795), (65, 431365), (115, 243815), (121, 231725), (143, 196075), (155, 180895), (253, 110825), (275, 101959), (299, 93775), (325, 86273), (341, 82225), (403, 69575), (575, 48763), (605, 46345), (713, 39325), (715, 39215), (775, 36179), (1265, 22165), (1495, 18755), (1573, 17825), (1705, 16445), (2015, 13915), (2783, 10075), (3025, 9269), (3289, 8525), (3565, 7865), (3575, 7843), (3751, 7475), (4433, 6325)]