21521781372

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{90823}}^1$

素因数の和:90888

約数の個数: 144

約数和(自身を含む): 64939886592

約数和(自身を除く): 43418105220

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 31, 39, 42, 49, 52, 62, 78, 84, 91, 93, 98, 124, 147, 156, 182, 186, 196, 217, 273, 294, 364, 372, 403, 434, 546, 588, 637, 651, 806, 868, 1092, 1209, 1274, 1302, 1519, 1612, 1911, 2418, 2548, 2604, 2821, 3038, 3822, 4557, 4836, 5642, 6076, 7644, 8463, 9114, 11284, 16926, 18228, 19747, 33852, 39494, 59241, 78988, 90823, 118482, 181646, 236964, 272469, 363292, 544938, 635761, 1089876, 1180699, 1271522, 1907283, 2361398, 2543044, 2815513, 3542097, 3814566, 4450327, 4722796, 5631026, 7084194, 7629132, 8264893, 8446539, 8900654, 11262052, 13350981, 14168388, 16529786, 16893078, 17801308, 19708591, 24794679, 26701962, 33059572, 33786156, 36601669, 39417182, 49589358, 53403924, 57854251, 59125773, 73203338, 78834364, 99178716, 109805007, 115708502, 118251546, 137960137, 146406676, 173562753, 219610014, 231417004, 236503092, 256211683, 275920274, 347125506, 413880411, 439220028, 512423366, 551840548, 694251012, 768635049, 827760822, 1024846732, 1537270098, 1655521644, 1793481781, 3074540196, 3586963562, 5380445343, 7173927124, 10760890686, 21521781372]

約数ペア:

[(1, 21521781372), (2, 10760890686), (3, 7173927124), (4, 5380445343), (6, 3586963562), (7, 3074540196), (12, 1793481781), (13, 1655521644), (14, 1537270098), (21, 1024846732), (26, 827760822), (28, 768635049), (31, 694251012), (39, 551840548), (42, 512423366), (49, 439220028), (52, 413880411), (62, 347125506), (78, 275920274), (84, 256211683), (91, 236503092), (93, 231417004), (98, 219610014), (124, 173562753), (147, 146406676), (156, 137960137), (182, 118251546), (186, 115708502), (196, 109805007), (217, 99178716), (273, 78834364), (294, 73203338), (364, 59125773), (372, 57854251), (403, 53403924), (434, 49589358), (546, 39417182), (588, 36601669), (637, 33786156), (651, 33059572), (806, 26701962), (868, 24794679), (1092, 19708591), (1209, 17801308), (1274, 16893078), (1302, 16529786), (1519, 14168388), (1612, 13350981), (1911, 11262052), (2418, 8900654), (2548, 8446539), (2604, 8264893), (2821, 7629132), (3038, 7084194), (3822, 5631026), (4557, 4722796), (4836, 4450327), (5642, 3814566), (6076, 3542097), (7644, 2815513), (8463, 2543044), (9114, 2361398), (11284, 1907283), (16926, 1271522), (18228, 1180699), (19747, 1089876), (33852, 635761), (39494, 544938), (59241, 363292), (78988, 272469), (90823, 236964), (118482, 181646)]