18293860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1084

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 23703452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 991, 1420, 1846, 1982, 3692, 3964, 4615, 4955, 9230, 9910, 12883, 18460, 19820, 25766, 51532, 64415, 70361, 128830, 140722, 257660, 281444, 351805, 703610, 914693, 1407220, 1829386, 3658772, 4573465, 9146930, 18293860]

約数ペア:

[(1, 18293860), (2, 9146930), (4, 4573465), (5, 3658772), (10, 1829386), (13, 1407220), (20, 914693), (26, 703610), (52, 351805), (65, 281444), (71, 257660), (130, 140722), (142, 128830), (260, 70361), (284, 64415), (355, 51532), (710, 25766), (923, 19820), (991, 18460), (1420, 12883), (1846, 9910), (1982, 9230), (3692, 4955), (3964, 4615)]