19965972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{977}}^1$

素因数の和:1128

約数の個数: 48

約数和(自身を含む): 50605632

約数和(自身を除く): 30639660

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 131, 156, 262, 393, 524, 786, 977, 1572, 1703, 1954, 2931, 3406, 3908, 5109, 5862, 6812, 10218, 11724, 12701, 20436, 25402, 38103, 50804, 76206, 127987, 152412, 255974, 383961, 511948, 767922, 1535844, 1663831, 3327662, 4991493, 6655324, 9982986, 19965972]

約数ペア:

[(1, 19965972), (2, 9982986), (3, 6655324), (4, 4991493), (6, 3327662), (12, 1663831), (13, 1535844), (26, 767922), (39, 511948), (52, 383961), (78, 255974), (131, 152412), (156, 127987), (262, 76206), (393, 50804), (524, 38103), (786, 25402), (977, 20436), (1572, 12701), (1703, 11724), (1954, 10218), (2931, 6812), (3406, 5862), (3908, 5109)]