218878720

素因数分解:

$2^8\times 5^1\times {\mathrm{307}}^1\times {\mathrm{557}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 526935024

約数和(自身を除く): 308056304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 307, 320, 557, 614, 640, 1114, 1228, 1280, 1535, 2228, 2456, 2785, 3070, 4456, 4912, 5570, 6140, 8912, 9824, 11140, 12280, 17824, 19648, 22280, 24560, 35648, 39296, 44560, 49120, 71296, 78592, 89120, 98240, 142592, 170999, 178240, 196480, 341998, 356480, 392960, 683996, 712960, 854995, 1367992, 1709990, 2735984, 3419980, 5471968, 6839960, 10943936, 13679920, 21887872, 27359840, 43775744, 54719680, 109439360, 218878720]

約数ペア:

[(1, 218878720), (2, 109439360), (4, 54719680), (5, 43775744), (8, 27359840), (10, 21887872), (16, 13679920), (20, 10943936), (32, 6839960), (40, 5471968), (64, 3419980), (80, 2735984), (128, 1709990), (160, 1367992), (256, 854995), (307, 712960), (320, 683996), (557, 392960), (614, 356480), (640, 341998), (1114, 196480), (1228, 178240), (1280, 170999), (1535, 142592), (2228, 98240), (2456, 89120), (2785, 78592), (3070, 71296), (4456, 49120), (4912, 44560), (5570, 39296), (6140, 35648), (8912, 24560), (9824, 22280), (11140, 19648), (12280, 17824)]