20837790

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1087}}^1$

素因数の和:1174

約数の個数: 64

約数和(自身を含む): 56401920

約数和(自身を除く): 35564130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 71, 90, 135, 142, 213, 270, 355, 426, 639, 710, 1065, 1087, 1278, 1917, 2130, 2174, 3195, 3261, 3834, 5435, 6390, 6522, 9585, 9783, 10870, 16305, 19170, 19566, 29349, 32610, 48915, 58698, 77177, 97830, 146745, 154354, 231531, 293490, 385885, 463062, 694593, 771770, 1157655, 1389186, 2083779, 2315310, 3472965, 4167558, 6945930, 10418895, 20837790]

約数ペア:

[(1, 20837790), (2, 10418895), (3, 6945930), (5, 4167558), (6, 3472965), (9, 2315310), (10, 2083779), (15, 1389186), (18, 1157655), (27, 771770), (30, 694593), (45, 463062), (54, 385885), (71, 293490), (90, 231531), (135, 154354), (142, 146745), (213, 97830), (270, 77177), (355, 58698), (426, 48915), (639, 32610), (710, 29349), (1065, 19566), (1087, 19170), (1278, 16305), (1917, 10870), (2130, 9783), (2174, 9585), (3195, 6522), (3261, 6390), (3834, 5435)]