19959804

素因数分解:

$2^2\times 3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 55641600

約数和(自身を除く): 35681796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 27, 36, 38, 54, 57, 71, 76, 108, 114, 137, 142, 171, 213, 228, 274, 284, 342, 411, 426, 513, 548, 639, 684, 822, 852, 1026, 1233, 1278, 1349, 1644, 1917, 2052, 2466, 2556, 2603, 2698, 3699, 3834, 4047, 4932, 5206, 5396, 7398, 7668, 7809, 8094, 9727, 10412, 12141, 14796, 15618, 16188, 19454, 23427, 24282, 29181, 31236, 36423, 38908, 46854, 48564, 58362, 70281, 72846, 87543, 93708, 116724, 140562, 145692, 175086, 184813, 262629, 281124, 350172, 369626, 525258, 554439, 739252, 1050516, 1108878, 1663317, 2217756, 3326634, 4989951, 6653268, 9979902, 19959804]

約数ペア:

[(1, 19959804), (2, 9979902), (3, 6653268), (4, 4989951), (6, 3326634), (9, 2217756), (12, 1663317), (18, 1108878), (19, 1050516), (27, 739252), (36, 554439), (38, 525258), (54, 369626), (57, 350172), (71, 281124), (76, 262629), (108, 184813), (114, 175086), (137, 145692), (142, 140562), (171, 116724), (213, 93708), (228, 87543), (274, 72846), (284, 70281), (342, 58362), (411, 48564), (426, 46854), (513, 38908), (548, 36423), (639, 31236), (684, 29181), (822, 24282), (852, 23427), (1026, 19454), (1233, 16188), (1278, 15618), (1349, 14796), (1644, 12141), (1917, 10412), (2052, 9727), (2466, 8094), (2556, 7809), (2603, 7668), (2698, 7398), (3699, 5396), (3834, 5206), (4047, 4932)]