20999484

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2791}}^1$

素因数の和:2831

約数の個数: 72

約数和(自身を含む): 60977280

約数和(自身を除く): 39977796

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 38, 44, 57, 66, 76, 99, 114, 132, 171, 198, 209, 228, 342, 396, 418, 627, 684, 836, 1254, 1881, 2508, 2791, 3762, 5582, 7524, 8373, 11164, 16746, 25119, 30701, 33492, 50238, 53029, 61402, 92103, 100476, 106058, 122804, 159087, 184206, 212116, 276309, 318174, 368412, 477261, 552618, 583319, 636348, 954522, 1105236, 1166638, 1749957, 1909044, 2333276, 3499914, 5249871, 6999828, 10499742, 20999484]

約数ペア:

[(1, 20999484), (2, 10499742), (3, 6999828), (4, 5249871), (6, 3499914), (9, 2333276), (11, 1909044), (12, 1749957), (18, 1166638), (19, 1105236), (22, 954522), (33, 636348), (36, 583319), (38, 552618), (44, 477261), (57, 368412), (66, 318174), (76, 276309), (99, 212116), (114, 184206), (132, 159087), (171, 122804), (198, 106058), (209, 100476), (228, 92103), (342, 61402), (396, 53029), (418, 50238), (627, 33492), (684, 30701), (836, 25119), (1254, 16746), (1881, 11164), (2508, 8373), (2791, 7524), (3762, 5582)]