21854940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1009}}^1$

素因数の和:1059

約数の個数: 72

約数和(自身を含む): 64648080

約数和(自身を除く): 42793140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 361, 380, 570, 722, 1009, 1083, 1140, 1444, 1805, 2018, 2166, 3027, 3610, 4036, 4332, 5045, 5415, 6054, 7220, 10090, 10830, 12108, 15135, 19171, 20180, 21660, 30270, 38342, 57513, 60540, 76684, 95855, 115026, 191710, 230052, 287565, 364249, 383420, 575130, 728498, 1092747, 1150260, 1456996, 1821245, 2185494, 3642490, 4370988, 5463735, 7284980, 10927470, 21854940]

約数ペア:

[(1, 21854940), (2, 10927470), (3, 7284980), (4, 5463735), (5, 4370988), (6, 3642490), (10, 2185494), (12, 1821245), (15, 1456996), (19, 1150260), (20, 1092747), (30, 728498), (38, 575130), (57, 383420), (60, 364249), (76, 287565), (95, 230052), (114, 191710), (190, 115026), (228, 95855), (285, 76684), (361, 60540), (380, 57513), (570, 38342), (722, 30270), (1009, 21660), (1083, 20180), (1140, 19171), (1444, 15135), (1805, 12108), (2018, 10830), (2166, 10090), (3027, 7220), (3610, 6054), (4036, 5415), (4332, 5045)]