81113620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2237}}^1$

素因数の和:2297

約数の個数: 72

約数和(自身を含む): 203595336

約数和(自身を除く): 122481716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 2237, 2590, 3626, 4474, 5180, 7252, 8948, 9065, 11185, 15659, 18130, 22370, 31318, 36260, 44740, 62636, 78295, 82769, 109613, 156590, 165538, 219226, 313180, 331076, 413845, 438452, 548065, 579383, 827690, 1096130, 1158766, 1655380, 2192260, 2317532, 2896915, 4055681, 5793830, 8111362, 11587660, 16222724, 20278405, 40556810, 81113620]

約数ペア:

[(1, 81113620), (2, 40556810), (4, 20278405), (5, 16222724), (7, 11587660), (10, 8111362), (14, 5793830), (20, 4055681), (28, 2896915), (35, 2317532), (37, 2192260), (49, 1655380), (70, 1158766), (74, 1096130), (98, 827690), (140, 579383), (148, 548065), (185, 438452), (196, 413845), (245, 331076), (259, 313180), (370, 219226), (490, 165538), (518, 156590), (740, 109613), (980, 82769), (1036, 78295), (1295, 62636), (1813, 44740), (2237, 36260), (2590, 31318), (3626, 22370), (4474, 18130), (5180, 15659), (7252, 11185), (8948, 9065)]