20687784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1087}}^1$

素因数の和:1170

約数の個数: 64

約数和(自身を含む): 56663040

約数和(自身を除く): 35975256

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 61, 78, 104, 122, 156, 183, 244, 312, 366, 488, 732, 793, 1087, 1464, 1586, 2174, 2379, 3172, 3261, 4348, 4758, 6344, 6522, 8696, 9516, 13044, 14131, 19032, 26088, 28262, 42393, 56524, 66307, 84786, 113048, 132614, 169572, 198921, 265228, 339144, 397842, 530456, 795684, 861991, 1591368, 1723982, 2585973, 3447964, 5171946, 6895928, 10343892, 20687784]

約数ペア:

[(1, 20687784), (2, 10343892), (3, 6895928), (4, 5171946), (6, 3447964), (8, 2585973), (12, 1723982), (13, 1591368), (24, 861991), (26, 795684), (39, 530456), (52, 397842), (61, 339144), (78, 265228), (104, 198921), (122, 169572), (156, 132614), (183, 113048), (244, 84786), (312, 66307), (366, 56524), (488, 42393), (732, 28262), (793, 26088), (1087, 19032), (1464, 14131), (1586, 13044), (2174, 9516), (2379, 8696), (3172, 6522), (3261, 6344), (4348, 4758)]