51388740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21961}}^1$

素因数の和:21989

約数の個数: 72

約数和(自身を含む): 167877528

約数和(自身を除く): 116488788

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 21961, 43922, 65883, 87844, 109805, 131766, 197649, 219610, 263532, 285493, 329415, 395298, 439220, 570986, 658830, 790596, 856479, 988245, 1141972, 1317660, 1427465, 1712958, 1976490, 2569437, 2854930, 3425916, 3952980, 4282395, 5138874, 5709860, 8564790, 10277748, 12847185, 17129580, 25694370, 51388740]

約数ペア:

[(1, 51388740), (2, 25694370), (3, 17129580), (4, 12847185), (5, 10277748), (6, 8564790), (9, 5709860), (10, 5138874), (12, 4282395), (13, 3952980), (15, 3425916), (18, 2854930), (20, 2569437), (26, 1976490), (30, 1712958), (36, 1427465), (39, 1317660), (45, 1141972), (52, 988245), (60, 856479), (65, 790596), (78, 658830), (90, 570986), (117, 439220), (130, 395298), (156, 329415), (180, 285493), (195, 263532), (234, 219610), (260, 197649), (390, 131766), (468, 109805), (585, 87844), (780, 65883), (1170, 43922), (2340, 21961)]