71020575

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 137826000

約数和(自身を除く): 66805425

約数列:

[1, 3, 5, 9, 15, 19, 25, 37, 45, 57, 75, 95, 111, 171, 185, 225, 285, 333, 449, 475, 555, 703, 855, 925, 1347, 1425, 1665, 2109, 2245, 2775, 3515, 4041, 4275, 6327, 6735, 8325, 8531, 10545, 11225, 16613, 17575, 20205, 25593, 31635, 33675, 42655, 49839, 52725, 76779, 83065, 101025, 127965, 149517, 158175, 213275, 249195, 315647, 383895, 415325, 639825, 747585, 946941, 1245975, 1578235, 1919475, 2840823, 3737925, 4734705, 7891175, 14204115, 23673525, 71020575]

約数ペア:

[(1, 71020575), (3, 23673525), (5, 14204115), (9, 7891175), (15, 4734705), (19, 3737925), (25, 2840823), (37, 1919475), (45, 1578235), (57, 1245975), (75, 946941), (95, 747585), (111, 639825), (171, 415325), (185, 383895), (225, 315647), (285, 249195), (333, 213275), (449, 158175), (475, 149517), (555, 127965), (703, 101025), (855, 83065), (925, 76779), (1347, 52725), (1425, 49839), (1665, 42655), (2109, 33675), (2245, 31635), (2775, 25593), (3515, 20205), (4041, 17575), (4275, 16613), (6327, 11225), (6735, 10545), (8325, 8531)]