1218791040

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20477}}^1$

素因数の和:20530

約数の個数: 128

約数和(自身を含む): 4010411520

約数和(自身を除く): 2791620480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 310, 320, 372, 384, 465, 480, 496, 620, 640, 744, 930, 960, 992, 1240, 1488, 1860, 1920, 1984, 2480, 2976, 3720, 3968, 4960, 5952, 7440, 9920, 11904, 14880, 19840, 20477, 29760, 40954, 59520, 61431, 81908, 102385, 122862, 163816, 204770, 245724, 307155, 327632, 409540, 491448, 614310, 634787, 655264, 819080, 982896, 1228620, 1269574, 1310528, 1638160, 1904361, 1965792, 2457240, 2539148, 2621056, 3173935, 3276320, 3808722, 3931584, 4914480, 5078296, 6347870, 6552640, 7617444, 7863168, 9521805, 9828960, 10156592, 12695740, 13105280, 15234888, 19043610, 19657920, 20313184, 25391480, 30469776, 38087220, 39315840, 40626368, 50782960, 60939552, 76174440, 81252736, 101565920, 121879104, 152348880, 203131840, 243758208, 304697760, 406263680, 609395520, 1218791040]

約数ペア:

[(1, 1218791040), (2, 609395520), (3, 406263680), (4, 304697760), (5, 243758208), (6, 203131840), (8, 152348880), (10, 121879104), (12, 101565920), (15, 81252736), (16, 76174440), (20, 60939552), (24, 50782960), (30, 40626368), (31, 39315840), (32, 38087220), (40, 30469776), (48, 25391480), (60, 20313184), (62, 19657920), (64, 19043610), (80, 15234888), (93, 13105280), (96, 12695740), (120, 10156592), (124, 9828960), (128, 9521805), (155, 7863168), (160, 7617444), (186, 6552640), (192, 6347870), (240, 5078296), (248, 4914480), (310, 3931584), (320, 3808722), (372, 3276320), (384, 3173935), (465, 2621056), (480, 2539148), (496, 2457240), (620, 1965792), (640, 1904361), (744, 1638160), (930, 1310528), (960, 1269574), (992, 1228620), (1240, 982896), (1488, 819080), (1860, 655264), (1920, 634787), (1984, 614310), (2480, 491448), (2976, 409540), (3720, 327632), (3968, 307155), (4960, 245724), (5952, 204770), (7440, 163816), (9920, 122862), (11904, 102385), (14880, 81908), (19840, 61431), (20477, 59520), (29760, 40954)]