30180920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:309

約数の個数: 128

約数和(自身を含む): 87091200

約数和(自身を除く): 56910280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 41, 44, 55, 56, 70, 77, 82, 88, 110, 140, 154, 164, 205, 220, 239, 280, 287, 308, 328, 385, 410, 440, 451, 478, 574, 616, 770, 820, 902, 956, 1148, 1195, 1435, 1540, 1640, 1673, 1804, 1912, 2255, 2296, 2390, 2629, 2870, 3080, 3157, 3346, 3608, 4510, 4780, 5258, 5740, 6314, 6692, 8365, 9020, 9560, 9799, 10516, 11480, 12628, 13145, 13384, 15785, 16730, 18040, 18403, 19598, 21032, 25256, 26290, 31570, 33460, 36806, 39196, 48995, 52580, 63140, 66920, 68593, 73612, 78392, 92015, 97990, 105160, 107789, 126280, 137186, 147224, 184030, 195980, 215578, 274372, 342965, 368060, 391960, 431156, 538945, 548744, 685930, 736120, 754523, 862312, 1077890, 1371860, 1509046, 2155780, 2743720, 3018092, 3772615, 4311560, 6036184, 7545230, 15090460, 30180920]

約数ペア:

[(1, 30180920), (2, 15090460), (4, 7545230), (5, 6036184), (7, 4311560), (8, 3772615), (10, 3018092), (11, 2743720), (14, 2155780), (20, 1509046), (22, 1371860), (28, 1077890), (35, 862312), (40, 754523), (41, 736120), (44, 685930), (55, 548744), (56, 538945), (70, 431156), (77, 391960), (82, 368060), (88, 342965), (110, 274372), (140, 215578), (154, 195980), (164, 184030), (205, 147224), (220, 137186), (239, 126280), (280, 107789), (287, 105160), (308, 97990), (328, 92015), (385, 78392), (410, 73612), (440, 68593), (451, 66920), (478, 63140), (574, 52580), (616, 48995), (770, 39196), (820, 36806), (902, 33460), (956, 31570), (1148, 26290), (1195, 25256), (1435, 21032), (1540, 19598), (1640, 18403), (1673, 18040), (1804, 16730), (1912, 15785), (2255, 13384), (2296, 13145), (2390, 12628), (2629, 11480), (2870, 10516), (3080, 9799), (3157, 9560), (3346, 9020), (3608, 8365), (4510, 6692), (4780, 6314), (5258, 5740)]