201427840

素因数分解:

$2^7\times 5^1\times {\mathrm{491}}^1\times {\mathrm{641}}^1$

素因数の和:1151

約数の個数: 64

約数和(自身を含む): 483271920

約数和(自身を除く): 281844080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 491, 640, 641, 982, 1282, 1964, 2455, 2564, 3205, 3928, 4910, 5128, 6410, 7856, 9820, 10256, 12820, 15712, 19640, 20512, 25640, 31424, 39280, 41024, 51280, 62848, 78560, 82048, 102560, 157120, 205120, 314240, 314731, 410240, 629462, 1258924, 1573655, 2517848, 3147310, 5035696, 6294620, 10071392, 12589240, 20142784, 25178480, 40285568, 50356960, 100713920, 201427840]

約数ペア:

[(1, 201427840), (2, 100713920), (4, 50356960), (5, 40285568), (8, 25178480), (10, 20142784), (16, 12589240), (20, 10071392), (32, 6294620), (40, 5035696), (64, 3147310), (80, 2517848), (128, 1573655), (160, 1258924), (320, 629462), (491, 410240), (640, 314731), (641, 314240), (982, 205120), (1282, 157120), (1964, 102560), (2455, 82048), (2564, 78560), (3205, 62848), (3928, 51280), (4910, 41024), (5128, 39280), (6410, 31424), (7856, 25640), (9820, 20512), (10256, 19640), (12820, 15712)]