78408820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4253

約数の個数: 72

約数和(自身を含む): 201670560

約数和(自身を除く): 123261740

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1330, 1862, 2660, 3724, 4211, 4655, 8422, 9310, 16844, 18620, 21055, 29477, 42110, 58954, 80009, 84220, 117908, 147385, 160018, 206339, 294770, 320036, 400045, 412678, 560063, 589540, 800090, 825356, 1031695, 1120126, 1600180, 2063390, 2240252, 2800315, 3920441, 4126780, 5600630, 7840882, 11201260, 15681764, 19602205, 39204410, 78408820]

約数ペア:

[(1, 78408820), (2, 39204410), (4, 19602205), (5, 15681764), (7, 11201260), (10, 7840882), (14, 5600630), (19, 4126780), (20, 3920441), (28, 2800315), (35, 2240252), (38, 2063390), (49, 1600180), (70, 1120126), (76, 1031695), (95, 825356), (98, 800090), (133, 589540), (140, 560063), (190, 412678), (196, 400045), (245, 320036), (266, 294770), (380, 206339), (490, 160018), (532, 147385), (665, 117908), (931, 84220), (980, 80009), (1330, 58954), (1862, 42110), (2660, 29477), (3724, 21055), (4211, 18620), (4655, 16844), (8422, 9310)]