198749440

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:244

約数の個数: 144

約数和(自身を含む): 511555968

約数和(自身を除く): 312806528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 43, 46, 64, 80, 86, 92, 115, 128, 157, 160, 172, 184, 215, 230, 256, 314, 320, 344, 368, 430, 460, 628, 640, 688, 736, 785, 860, 920, 989, 1256, 1280, 1376, 1472, 1570, 1720, 1840, 1978, 2512, 2752, 2944, 3140, 3440, 3611, 3680, 3956, 4945, 5024, 5504, 5888, 6280, 6751, 6880, 7222, 7360, 7912, 9890, 10048, 11008, 12560, 13502, 13760, 14444, 14720, 15824, 18055, 19780, 20096, 25120, 27004, 27520, 28888, 29440, 31648, 33755, 36110, 39560, 40192, 50240, 54008, 55040, 57776, 63296, 67510, 72220, 79120, 100480, 108016, 115552, 126592, 135020, 144440, 155273, 158240, 200960, 216032, 231104, 253184, 270040, 288880, 310546, 316480, 432064, 462208, 540080, 577760, 621092, 632960, 776365, 864128, 924416, 1080160, 1155520, 1242184, 1265920, 1552730, 1728256, 2160320, 2311040, 2484368, 3105460, 4320640, 4622080, 4968736, 6210920, 8641280, 9937472, 12421840, 19874944, 24843680, 39749888, 49687360, 99374720, 198749440]

約数ペア:

[(1, 198749440), (2, 99374720), (4, 49687360), (5, 39749888), (8, 24843680), (10, 19874944), (16, 12421840), (20, 9937472), (23, 8641280), (32, 6210920), (40, 4968736), (43, 4622080), (46, 4320640), (64, 3105460), (80, 2484368), (86, 2311040), (92, 2160320), (115, 1728256), (128, 1552730), (157, 1265920), (160, 1242184), (172, 1155520), (184, 1080160), (215, 924416), (230, 864128), (256, 776365), (314, 632960), (320, 621092), (344, 577760), (368, 540080), (430, 462208), (460, 432064), (628, 316480), (640, 310546), (688, 288880), (736, 270040), (785, 253184), (860, 231104), (920, 216032), (989, 200960), (1256, 158240), (1280, 155273), (1376, 144440), (1472, 135020), (1570, 126592), (1720, 115552), (1840, 108016), (1978, 100480), (2512, 79120), (2752, 72220), (2944, 67510), (3140, 63296), (3440, 57776), (3611, 55040), (3680, 54008), (3956, 50240), (4945, 40192), (5024, 39560), (5504, 36110), (5888, 33755), (6280, 31648), (6751, 29440), (6880, 28888), (7222, 27520), (7360, 27004), (7912, 25120), (9890, 20096), (10048, 19780), (11008, 18055), (12560, 15824), (13502, 14720), (13760, 14444)]