20643896

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4051}}^1$

素因数の和:4084

約数の個数: 48

約数和(自身を含む): 48502440

約数和(自身を除く): 27858544

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4051, 5096, 8102, 16204, 28357, 32408, 52663, 56714, 105326, 113428, 198499, 210652, 226856, 368641, 396998, 421304, 737282, 793996, 1474564, 1587992, 2580487, 2949128, 5160974, 10321948, 20643896]

約数ペア:

[(1, 20643896), (2, 10321948), (4, 5160974), (7, 2949128), (8, 2580487), (13, 1587992), (14, 1474564), (26, 793996), (28, 737282), (49, 421304), (52, 396998), (56, 368641), (91, 226856), (98, 210652), (104, 198499), (182, 113428), (196, 105326), (364, 56714), (392, 52663), (637, 32408), (728, 28357), (1274, 16204), (2548, 8102), (4051, 5096)]