208605215

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{181}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 330220800

約数和(自身を除く): 121615585

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 149, 181, 221, 455, 595, 745, 905, 1043, 1105, 1267, 1547, 1937, 2353, 2533, 3077, 5215, 6335, 7735, 9685, 11765, 12665, 13559, 15385, 16471, 17731, 21539, 26969, 32929, 40001, 67795, 82355, 88655, 107695, 134845, 164645, 188783, 200005, 230503, 280007, 350597, 458473, 943915, 1152515, 1400035, 1752985, 2292365, 2454179, 3209311, 5960149, 12270895, 16046555, 29800745, 41721043, 208605215]

約数ペア:

[(1, 208605215), (5, 41721043), (7, 29800745), (13, 16046555), (17, 12270895), (35, 5960149), (65, 3209311), (85, 2454179), (91, 2292365), (119, 1752985), (149, 1400035), (181, 1152515), (221, 943915), (455, 458473), (595, 350597), (745, 280007), (905, 230503), (1043, 200005), (1105, 188783), (1267, 164645), (1547, 134845), (1937, 107695), (2353, 88655), (2533, 82355), (3077, 67795), (5215, 40001), (6335, 32929), (7735, 26969), (9685, 21539), (11765, 17731), (12665, 16471), (13559, 15385)]