21671856

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{89}}^2$

素因数の和:211

約数の個数: 90

約数和(自身を含む): 64568660

約数和(自身を除く): 42896804

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 72, 76, 89, 114, 144, 152, 171, 178, 228, 267, 304, 342, 356, 456, 534, 684, 712, 801, 912, 1068, 1368, 1424, 1602, 1691, 2136, 2736, 3204, 3382, 4272, 5073, 6408, 6764, 7921, 10146, 12816, 13528, 15219, 15842, 20292, 23763, 27056, 30438, 31684, 40584, 47526, 60876, 63368, 71289, 81168, 95052, 121752, 126736, 142578, 150499, 190104, 243504, 285156, 300998, 380208, 451497, 570312, 601996, 902994, 1140624, 1203992, 1354491, 1805988, 2407984, 2708982, 3611976, 5417964, 7223952, 10835928, 21671856]

約数ペア:

[(1, 21671856), (2, 10835928), (3, 7223952), (4, 5417964), (6, 3611976), (8, 2708982), (9, 2407984), (12, 1805988), (16, 1354491), (18, 1203992), (19, 1140624), (24, 902994), (36, 601996), (38, 570312), (48, 451497), (57, 380208), (72, 300998), (76, 285156), (89, 243504), (114, 190104), (144, 150499), (152, 142578), (171, 126736), (178, 121752), (228, 95052), (267, 81168), (304, 71289), (342, 63368), (356, 60876), (456, 47526), (534, 40584), (684, 31684), (712, 30438), (801, 27056), (912, 23763), (1068, 20292), (1368, 15842), (1424, 15219), (1602, 13528), (1691, 12816), (2136, 10146), (2736, 7921), (3204, 6764), (3382, 6408), (4272, 5073)]