128208640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1$

素因数の和:418

約数の個数: 144

約数和(自身を含む): 360561600

約数和(自身を除く): 232352960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 64, 70, 80, 82, 112, 128, 140, 160, 164, 205, 224, 256, 280, 287, 320, 328, 349, 410, 448, 560, 574, 640, 656, 698, 820, 896, 1120, 1148, 1280, 1312, 1396, 1435, 1640, 1745, 1792, 2240, 2296, 2443, 2624, 2792, 2870, 3280, 3490, 4480, 4592, 4886, 5248, 5584, 5740, 6560, 6980, 8960, 9184, 9772, 10496, 11168, 11480, 12215, 13120, 13960, 14309, 18368, 19544, 22336, 22960, 24430, 26240, 27920, 28618, 36736, 39088, 44672, 45920, 48860, 52480, 55840, 57236, 71545, 73472, 78176, 89344, 91840, 97720, 100163, 111680, 114472, 143090, 156352, 183680, 195440, 200326, 223360, 228944, 286180, 312704, 367360, 390880, 400652, 446720, 457888, 500815, 572360, 625408, 781760, 801304, 915776, 1001630, 1144720, 1563520, 1602608, 1831552, 2003260, 2289440, 3127040, 3205216, 3663104, 4006520, 4578880, 6410432, 8013040, 9157760, 12820864, 16026080, 18315520, 25641728, 32052160, 64104320, 128208640]

約数ペア:

[(1, 128208640), (2, 64104320), (4, 32052160), (5, 25641728), (7, 18315520), (8, 16026080), (10, 12820864), (14, 9157760), (16, 8013040), (20, 6410432), (28, 4578880), (32, 4006520), (35, 3663104), (40, 3205216), (41, 3127040), (56, 2289440), (64, 2003260), (70, 1831552), (80, 1602608), (82, 1563520), (112, 1144720), (128, 1001630), (140, 915776), (160, 801304), (164, 781760), (205, 625408), (224, 572360), (256, 500815), (280, 457888), (287, 446720), (320, 400652), (328, 390880), (349, 367360), (410, 312704), (448, 286180), (560, 228944), (574, 223360), (640, 200326), (656, 195440), (698, 183680), (820, 156352), (896, 143090), (1120, 114472), (1148, 111680), (1280, 100163), (1312, 97720), (1396, 91840), (1435, 89344), (1640, 78176), (1745, 73472), (1792, 71545), (2240, 57236), (2296, 55840), (2443, 52480), (2624, 48860), (2792, 45920), (2870, 44672), (3280, 39088), (3490, 36736), (4480, 28618), (4592, 27920), (4886, 26240), (5248, 24430), (5584, 22960), (5740, 22336), (6560, 19544), (6980, 18368), (8960, 14309), (9184, 13960), (9772, 13120), (10496, 12215), (11168, 11480)]