162814720

素因数分解:

$2^8\times 5^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:741

約数の個数: 72

約数和(自身を含む): 392202720

約数和(自身を除く): 229388000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 311, 320, 409, 622, 640, 818, 1244, 1280, 1555, 1636, 2045, 2488, 3110, 3272, 4090, 4976, 6220, 6544, 8180, 9952, 12440, 13088, 16360, 19904, 24880, 26176, 32720, 39808, 49760, 52352, 65440, 79616, 99520, 104704, 127199, 130880, 199040, 254398, 261760, 398080, 508796, 523520, 635995, 1017592, 1271990, 2035184, 2543980, 4070368, 5087960, 8140736, 10175920, 16281472, 20351840, 32562944, 40703680, 81407360, 162814720]

約数ペア:

[(1, 162814720), (2, 81407360), (4, 40703680), (5, 32562944), (8, 20351840), (10, 16281472), (16, 10175920), (20, 8140736), (32, 5087960), (40, 4070368), (64, 2543980), (80, 2035184), (128, 1271990), (160, 1017592), (256, 635995), (311, 523520), (320, 508796), (409, 398080), (622, 261760), (640, 254398), (818, 199040), (1244, 130880), (1280, 127199), (1555, 104704), (1636, 99520), (2045, 79616), (2488, 65440), (3110, 52352), (3272, 49760), (4090, 39808), (4976, 32720), (6220, 26176), (6544, 24880), (8180, 19904), (9952, 16360), (12440, 13088)]