128977880060

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{409}}^1\times {\mathrm{1621}}^1$

素因数の和:2247

約数の個数: 96

約数和(自身を含む): 277520826240

約数和(自身を除く): 148542946180

約数列:

[1, 2, 4, 5, 10, 20, 71, 137, 142, 274, 284, 355, 409, 548, 685, 710, 818, 1370, 1420, 1621, 1636, 2045, 2740, 3242, 4090, 6484, 8105, 8180, 9727, 16210, 19454, 29039, 32420, 38908, 48635, 56033, 58078, 97270, 112066, 115091, 116156, 145195, 194540, 222077, 224132, 230182, 280165, 290390, 444154, 460364, 560330, 575455, 580780, 662989, 888308, 1110385, 1120660, 1150910, 1325978, 2220770, 2301820, 2651956, 3314945, 3978343, 4441540, 6629890, 7956686, 13259780, 15767467, 15913372, 19891715, 31534934, 39783430, 47072219, 63069868, 78837335, 79566860, 90829493, 94144438, 157674670, 181658986, 188288876, 235361095, 315349340, 363317972, 454147465, 470722190, 908294930, 941444380, 1816589860, 6448894003, 12897788006, 25795576012, 32244470015, 64488940030, 128977880060]

約数ペア:

[(1, 128977880060), (2, 64488940030), (4, 32244470015), (5, 25795576012), (10, 12897788006), (20, 6448894003), (71, 1816589860), (137, 941444380), (142, 908294930), (274, 470722190), (284, 454147465), (355, 363317972), (409, 315349340), (548, 235361095), (685, 188288876), (710, 181658986), (818, 157674670), (1370, 94144438), (1420, 90829493), (1621, 79566860), (1636, 78837335), (2045, 63069868), (2740, 47072219), (3242, 39783430), (4090, 31534934), (6484, 19891715), (8105, 15913372), (8180, 15767467), (9727, 13259780), (16210, 7956686), (19454, 6629890), (29039, 4441540), (32420, 3978343), (38908, 3314945), (48635, 2651956), (56033, 2301820), (58078, 2220770), (97270, 1325978), (112066, 1150910), (115091, 1120660), (116156, 1110385), (145195, 888308), (194540, 662989), (222077, 580780), (224132, 575455), (230182, 560330), (280165, 460364), (290390, 444154)]