21245724

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:467

約数の個数: 72

約数和(自身を含む): 57330000

約数和(自身を除く): 36084276

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 89, 114, 171, 178, 228, 267, 342, 349, 356, 534, 684, 698, 801, 1047, 1068, 1396, 1602, 1691, 2094, 3141, 3204, 3382, 4188, 5073, 6282, 6631, 6764, 10146, 12564, 13262, 15219, 19893, 20292, 26524, 30438, 31061, 39786, 59679, 60876, 62122, 79572, 93183, 119358, 124244, 186366, 238716, 279549, 372732, 559098, 590159, 1118196, 1180318, 1770477, 2360636, 3540954, 5311431, 7081908, 10622862, 21245724]

約数ペア:

[(1, 21245724), (2, 10622862), (3, 7081908), (4, 5311431), (6, 3540954), (9, 2360636), (12, 1770477), (18, 1180318), (19, 1118196), (36, 590159), (38, 559098), (57, 372732), (76, 279549), (89, 238716), (114, 186366), (171, 124244), (178, 119358), (228, 93183), (267, 79572), (342, 62122), (349, 60876), (356, 59679), (534, 39786), (684, 31061), (698, 30438), (801, 26524), (1047, 20292), (1068, 19893), (1396, 15219), (1602, 13262), (1691, 12564), (2094, 10146), (3141, 6764), (3204, 6631), (3382, 6282), (4188, 5073)]