205196680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6469}}^1$

素因数の和:6554

約数の個数: 64

約数和(自身を含む): 505436400

約数和(自身を除く): 300239720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 1220, 1586, 2440, 3172, 3965, 6344, 6469, 7930, 12938, 15860, 25876, 31720, 32345, 51752, 64690, 84097, 129380, 168194, 258760, 336388, 394609, 420485, 672776, 789218, 840970, 1578436, 1681940, 1973045, 3156872, 3363880, 3946090, 5129917, 7892180, 10259834, 15784360, 20519668, 25649585, 41039336, 51299170, 102598340, 205196680]

約数ペア:

[(1, 205196680), (2, 102598340), (4, 51299170), (5, 41039336), (8, 25649585), (10, 20519668), (13, 15784360), (20, 10259834), (26, 7892180), (40, 5129917), (52, 3946090), (61, 3363880), (65, 3156872), (104, 1973045), (122, 1681940), (130, 1578436), (244, 840970), (260, 789218), (305, 672776), (488, 420485), (520, 394609), (610, 336388), (793, 258760), (1220, 168194), (1586, 129380), (2440, 84097), (3172, 64690), (3965, 51752), (6344, 32345), (6469, 31720), (7930, 25876), (12938, 15860)]