81128860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 189665280

約数和(自身を除く): 108536420

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 71, 76, 95, 97, 124, 142, 155, 190, 194, 284, 310, 355, 380, 388, 485, 589, 620, 710, 970, 1178, 1349, 1420, 1843, 1940, 2201, 2356, 2698, 2945, 3007, 3686, 4402, 5396, 5890, 6014, 6745, 6887, 7372, 8804, 9215, 11005, 11780, 12028, 13490, 13774, 15035, 18430, 22010, 26980, 27548, 30070, 34435, 36860, 41819, 44020, 57133, 60140, 68870, 83638, 114266, 130853, 137740, 167276, 209095, 213497, 228532, 261706, 285665, 418190, 426994, 523412, 571330, 654265, 836380, 853988, 1067485, 1142660, 1308530, 2134970, 2617060, 4056443, 4269940, 8112886, 16225772, 20282215, 40564430, 81128860]

約数ペア:

[(1, 81128860), (2, 40564430), (4, 20282215), (5, 16225772), (10, 8112886), (19, 4269940), (20, 4056443), (31, 2617060), (38, 2134970), (62, 1308530), (71, 1142660), (76, 1067485), (95, 853988), (97, 836380), (124, 654265), (142, 571330), (155, 523412), (190, 426994), (194, 418190), (284, 285665), (310, 261706), (355, 228532), (380, 213497), (388, 209095), (485, 167276), (589, 137740), (620, 130853), (710, 114266), (970, 83638), (1178, 68870), (1349, 60140), (1420, 57133), (1843, 44020), (1940, 41819), (2201, 36860), (2356, 34435), (2698, 30070), (2945, 27548), (3007, 26980), (3686, 22010), (4402, 18430), (5396, 15035), (5890, 13774), (6014, 13490), (6745, 12028), (6887, 11780), (7372, 11005), (8804, 9215)]