19515760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:422

約数の個数: 80

約数和(自身を含む): 50389632

約数和(自身を除く): 30873872

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 67, 80, 88, 110, 134, 176, 220, 268, 331, 335, 440, 536, 662, 670, 737, 880, 1072, 1324, 1340, 1474, 1655, 2648, 2680, 2948, 3310, 3641, 3685, 5296, 5360, 5896, 6620, 7282, 7370, 11792, 13240, 14564, 14740, 18205, 22177, 26480, 29128, 29480, 36410, 44354, 58256, 58960, 72820, 88708, 110885, 145640, 177416, 221770, 243947, 291280, 354832, 443540, 487894, 887080, 975788, 1219735, 1774160, 1951576, 2439470, 3903152, 4878940, 9757880, 19515760]

約数ペア:

[(1, 19515760), (2, 9757880), (4, 4878940), (5, 3903152), (8, 2439470), (10, 1951576), (11, 1774160), (16, 1219735), (20, 975788), (22, 887080), (40, 487894), (44, 443540), (55, 354832), (67, 291280), (80, 243947), (88, 221770), (110, 177416), (134, 145640), (176, 110885), (220, 88708), (268, 72820), (331, 58960), (335, 58256), (440, 44354), (536, 36410), (662, 29480), (670, 29128), (737, 26480), (880, 22177), (1072, 18205), (1324, 14740), (1340, 14564), (1474, 13240), (1655, 11792), (2648, 7370), (2680, 7282), (2948, 6620), (3310, 5896), (3641, 5360), (3685, 5296)]