251092660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19709}}^1$

素因数の和:19745

約数の個数: 72

約数和(自身を含む): 660600360

約数和(自身を除く): 409507700

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6370, 12740, 19709, 39418, 78836, 98545, 137963, 197090, 256217, 275926, 394180, 512434, 551852, 689815, 965741, 1024868, 1281085, 1379630, 1793519, 1931482, 2562170, 2759260, 3587038, 3862964, 4828705, 5124340, 7174076, 8967595, 9657410, 12554633, 17935190, 19314820, 25109266, 35870380, 50218532, 62773165, 125546330, 251092660]

約数ペア:

[(1, 251092660), (2, 125546330), (4, 62773165), (5, 50218532), (7, 35870380), (10, 25109266), (13, 19314820), (14, 17935190), (20, 12554633), (26, 9657410), (28, 8967595), (35, 7174076), (49, 5124340), (52, 4828705), (65, 3862964), (70, 3587038), (91, 2759260), (98, 2562170), (130, 1931482), (140, 1793519), (182, 1379630), (196, 1281085), (245, 1024868), (260, 965741), (364, 689815), (455, 551852), (490, 512434), (637, 394180), (910, 275926), (980, 256217), (1274, 197090), (1820, 137963), (2548, 98545), (3185, 78836), (6370, 39418), (12740, 19709)]