1297977720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{1597}}^1$

素因数の和:2145

約数の個数: 128

約数和(自身を含む): 4204146240

約数和(自身を除く): 2906168520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 521, 780, 1042, 1560, 1563, 1597, 2084, 2605, 3126, 3194, 4168, 4791, 5210, 6252, 6388, 6773, 7815, 7985, 9582, 10420, 12504, 12776, 13546, 15630, 15970, 19164, 20319, 20761, 20840, 23955, 27092, 31260, 31940, 33865, 38328, 40638, 41522, 47910, 54184, 62283, 62520, 63880, 67730, 81276, 83044, 95820, 101595, 103805, 124566, 135460, 162552, 166088, 191640, 203190, 207610, 249132, 270920, 311415, 406380, 415220, 498264, 622830, 812760, 830440, 832037, 1245660, 1664074, 2491320, 2496111, 3328148, 4160185, 4992222, 6656296, 8320370, 9984444, 10816481, 12480555, 16640740, 19968888, 21632962, 24961110, 32449443, 33281480, 43265924, 49922220, 54082405, 64898886, 86531848, 99844440, 108164810, 129797772, 162247215, 216329620, 259595544, 324494430, 432659240, 648988860, 1297977720]

約数ペア:

[(1, 1297977720), (2, 648988860), (3, 432659240), (4, 324494430), (5, 259595544), (6, 216329620), (8, 162247215), (10, 129797772), (12, 108164810), (13, 99844440), (15, 86531848), (20, 64898886), (24, 54082405), (26, 49922220), (30, 43265924), (39, 33281480), (40, 32449443), (52, 24961110), (60, 21632962), (65, 19968888), (78, 16640740), (104, 12480555), (120, 10816481), (130, 9984444), (156, 8320370), (195, 6656296), (260, 4992222), (312, 4160185), (390, 3328148), (520, 2496111), (521, 2491320), (780, 1664074), (1042, 1245660), (1560, 832037), (1563, 830440), (1597, 812760), (2084, 622830), (2605, 498264), (3126, 415220), (3194, 406380), (4168, 311415), (4791, 270920), (5210, 249132), (6252, 207610), (6388, 203190), (6773, 191640), (7815, 166088), (7985, 162552), (9582, 135460), (10420, 124566), (12504, 103805), (12776, 101595), (13546, 95820), (15630, 83044), (15970, 81276), (19164, 67730), (20319, 63880), (20761, 62520), (20840, 62283), (23955, 54184), (27092, 47910), (31260, 41522), (31940, 40638), (33865, 38328)]