51389240

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:349

約数の個数: 96

約数和(自身を含む): 136170720

約数和(自身を除く): 84781480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 157, 167, 196, 245, 280, 314, 334, 392, 490, 628, 668, 785, 835, 980, 1099, 1169, 1256, 1336, 1570, 1670, 1960, 2198, 2338, 3140, 3340, 4396, 4676, 5495, 5845, 6280, 6680, 7693, 8183, 8792, 9352, 10990, 11690, 15386, 16366, 21980, 23380, 26219, 30772, 32732, 38465, 40915, 43960, 46760, 52438, 61544, 65464, 76930, 81830, 104876, 131095, 153860, 163660, 183533, 209752, 262190, 307720, 327320, 367066, 524380, 734132, 917665, 1048760, 1284731, 1468264, 1835330, 2569462, 3670660, 5138924, 6423655, 7341320, 10277848, 12847310, 25694620, 51389240]

約数ペア:

[(1, 51389240), (2, 25694620), (4, 12847310), (5, 10277848), (7, 7341320), (8, 6423655), (10, 5138924), (14, 3670660), (20, 2569462), (28, 1835330), (35, 1468264), (40, 1284731), (49, 1048760), (56, 917665), (70, 734132), (98, 524380), (140, 367066), (157, 327320), (167, 307720), (196, 262190), (245, 209752), (280, 183533), (314, 163660), (334, 153860), (392, 131095), (490, 104876), (628, 81830), (668, 76930), (785, 65464), (835, 61544), (980, 52438), (1099, 46760), (1169, 43960), (1256, 40915), (1336, 38465), (1570, 32732), (1670, 30772), (1960, 26219), (2198, 23380), (2338, 21980), (3140, 16366), (3340, 15386), (4396, 11690), (4676, 10990), (5495, 9352), (5845, 8792), (6280, 8183), (6680, 7693)]