21000978830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{34511}}^1$

素因数の和:34713

約数の個数: 64

約数和(自身を含む): 42302324736

約数和(自身を除く): 21301345906

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 151, 155, 302, 310, 403, 755, 806, 1510, 1963, 2015, 3926, 4030, 4681, 9362, 9815, 19630, 23405, 34511, 46810, 60853, 69022, 121706, 172555, 304265, 345110, 448643, 608530, 897286, 1069841, 2139682, 2243215, 4486430, 5211161, 5349205, 10422322, 10698410, 13907933, 26055805, 27815866, 52111610, 67745093, 69539665, 135490186, 139079330, 161545991, 323091982, 338725465, 677450930, 807729955, 1615459910, 2100097883, 4200195766, 10500489415, 21000978830]

約数ペア:

[(1, 21000978830), (2, 10500489415), (5, 4200195766), (10, 2100097883), (13, 1615459910), (26, 807729955), (31, 677450930), (62, 338725465), (65, 323091982), (130, 161545991), (151, 139079330), (155, 135490186), (302, 69539665), (310, 67745093), (403, 52111610), (755, 27815866), (806, 26055805), (1510, 13907933), (1963, 10698410), (2015, 10422322), (3926, 5349205), (4030, 5211161), (4681, 4486430), (9362, 2243215), (9815, 2139682), (19630, 1069841), (23405, 897286), (34511, 608530), (46810, 448643), (60853, 345110), (69022, 304265), (121706, 172555)]