20819916

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{4943}}^1$

素因数の和:4972

約数の個数: 60

約数和(自身を含む): 58625952

約数和(自身を除く): 37806036

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 324, 351, 468, 702, 1053, 1404, 2106, 4212, 4943, 9886, 14829, 19772, 29658, 44487, 59316, 64259, 88974, 128518, 133461, 177948, 192777, 257036, 266922, 385554, 400383, 533844, 578331, 771108, 800766, 1156662, 1601532, 1734993, 2313324, 3469986, 5204979, 6939972, 10409958, 20819916]

約数ペア:

[(1, 20819916), (2, 10409958), (3, 6939972), (4, 5204979), (6, 3469986), (9, 2313324), (12, 1734993), (13, 1601532), (18, 1156662), (26, 800766), (27, 771108), (36, 578331), (39, 533844), (52, 400383), (54, 385554), (78, 266922), (81, 257036), (108, 192777), (117, 177948), (156, 133461), (162, 128518), (234, 88974), (324, 64259), (351, 59316), (468, 44487), (702, 29658), (1053, 19772), (1404, 14829), (2106, 9886), (4212, 4943)]