21521262

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 52416000

約数和(自身を除く): 30894738

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 149, 181, 266, 298, 362, 399, 447, 543, 798, 894, 1043, 1086, 1267, 2086, 2534, 2831, 3129, 3439, 3801, 5662, 6258, 6878, 7602, 8493, 10317, 16986, 19817, 20634, 24073, 26969, 39634, 48146, 53938, 59451, 72219, 80907, 118902, 144438, 161814, 188783, 377566, 512411, 566349, 1024822, 1132698, 1537233, 3074466, 3586877, 7173754, 10760631, 21521262]

約数ペア:

[(1, 21521262), (2, 10760631), (3, 7173754), (6, 3586877), (7, 3074466), (14, 1537233), (19, 1132698), (21, 1024822), (38, 566349), (42, 512411), (57, 377566), (114, 188783), (133, 161814), (149, 144438), (181, 118902), (266, 80907), (298, 72219), (362, 59451), (399, 53938), (447, 48146), (543, 39634), (798, 26969), (894, 24073), (1043, 20634), (1086, 19817), (1267, 16986), (2086, 10317), (2534, 8493), (2831, 7602), (3129, 6878), (3439, 6258), (3801, 5662)]