209991280

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1163}}^1$

素因数の和:1274

約数の個数: 80

約数和(自身を含む): 510083424

約数和(自身を除く): 300092144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 61, 74, 80, 122, 148, 185, 244, 296, 305, 370, 488, 592, 610, 740, 976, 1163, 1220, 1480, 2257, 2326, 2440, 2960, 4514, 4652, 4880, 5815, 9028, 9304, 11285, 11630, 18056, 18608, 22570, 23260, 36112, 43031, 45140, 46520, 70943, 86062, 90280, 93040, 141886, 172124, 180560, 215155, 283772, 344248, 354715, 430310, 567544, 688496, 709430, 860620, 1135088, 1418860, 1721240, 2624891, 2837720, 3442480, 5249782, 5675440, 10499564, 13124455, 20999128, 26248910, 41998256, 52497820, 104995640, 209991280]

約数ペア:

[(1, 209991280), (2, 104995640), (4, 52497820), (5, 41998256), (8, 26248910), (10, 20999128), (16, 13124455), (20, 10499564), (37, 5675440), (40, 5249782), (61, 3442480), (74, 2837720), (80, 2624891), (122, 1721240), (148, 1418860), (185, 1135088), (244, 860620), (296, 709430), (305, 688496), (370, 567544), (488, 430310), (592, 354715), (610, 344248), (740, 283772), (976, 215155), (1163, 180560), (1220, 172124), (1480, 141886), (2257, 93040), (2326, 90280), (2440, 86062), (2960, 70943), (4514, 46520), (4652, 45140), (4880, 43031), (5815, 36112), (9028, 23260), (9304, 22570), (11285, 18608), (11630, 18056)]