20988408

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{461}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 60318720

約数和(自身を除く): 39330312

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 271, 461, 542, 813, 922, 1084, 1383, 1626, 1844, 1897, 2168, 2766, 3227, 3252, 3688, 3794, 5532, 5691, 6454, 6504, 7588, 9681, 11064, 11382, 12908, 15176, 19362, 22764, 25816, 38724, 45528, 77448, 124931, 249862, 374793, 499724, 749586, 874517, 999448, 1499172, 1749034, 2623551, 2998344, 3498068, 5247102, 6996136, 10494204, 20988408]

約数ペア:

[(1, 20988408), (2, 10494204), (3, 6996136), (4, 5247102), (6, 3498068), (7, 2998344), (8, 2623551), (12, 1749034), (14, 1499172), (21, 999448), (24, 874517), (28, 749586), (42, 499724), (56, 374793), (84, 249862), (168, 124931), (271, 77448), (461, 45528), (542, 38724), (813, 25816), (922, 22764), (1084, 19362), (1383, 15176), (1626, 12908), (1844, 11382), (1897, 11064), (2168, 9681), (2766, 7588), (3227, 6504), (3252, 6454), (3688, 5691), (3794, 5532)]