78138340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1123}}^1$

素因数の和:1217

約数の個数: 72

約数和(自身を含む): 193741632

約数和(自身を除く): 115603292

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1123, 1420, 1988, 2246, 2485, 3479, 4492, 4970, 5615, 6958, 7861, 9940, 11230, 13916, 15722, 17395, 22460, 31444, 34790, 39305, 55027, 69580, 78610, 79733, 110054, 157220, 159466, 220108, 275135, 318932, 398665, 550270, 558131, 797330, 1100540, 1116262, 1594660, 2232524, 2790655, 3906917, 5581310, 7813834, 11162620, 15627668, 19534585, 39069170, 78138340]

約数ペア:

[(1, 78138340), (2, 39069170), (4, 19534585), (5, 15627668), (7, 11162620), (10, 7813834), (14, 5581310), (20, 3906917), (28, 2790655), (35, 2232524), (49, 1594660), (70, 1116262), (71, 1100540), (98, 797330), (140, 558131), (142, 550270), (196, 398665), (245, 318932), (284, 275135), (355, 220108), (490, 159466), (497, 157220), (710, 110054), (980, 79733), (994, 78610), (1123, 69580), (1420, 55027), (1988, 39305), (2246, 34790), (2485, 31444), (3479, 22460), (4492, 17395), (4970, 15722), (5615, 13916), (6958, 11230), (7861, 9940)]