21000585970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{154883}}^1$

素因数の和:155059

約数の個数: 64

約数和(自身を含む): 46836921600

約数和(自身を除く): 25836335630

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 149, 182, 298, 455, 745, 910, 1043, 1490, 1937, 2086, 3874, 5215, 9685, 10430, 13559, 19370, 27118, 67795, 135590, 154883, 309766, 774415, 1084181, 1548830, 2013479, 2168362, 4026958, 5420905, 10067395, 10841810, 14094353, 20134790, 23077567, 28188706, 46155134, 70471765, 115387835, 140943530, 161542969, 230775670, 300008371, 323085938, 600016742, 807714845, 1500041855, 1615429690, 2100058597, 3000083710, 4200117194, 10500292985, 21000585970]

約数ペア:

[(1, 21000585970), (2, 10500292985), (5, 4200117194), (7, 3000083710), (10, 2100058597), (13, 1615429690), (14, 1500041855), (26, 807714845), (35, 600016742), (65, 323085938), (70, 300008371), (91, 230775670), (130, 161542969), (149, 140943530), (182, 115387835), (298, 70471765), (455, 46155134), (745, 28188706), (910, 23077567), (1043, 20134790), (1490, 14094353), (1937, 10841810), (2086, 10067395), (3874, 5420905), (5215, 4026958), (9685, 2168362), (10430, 2013479), (13559, 1548830), (19370, 1084181), (27118, 774415), (67795, 309766), (135590, 154883)]