20958976

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 45785600

約数和(自身を除く): 24826624

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 128, 139, 152, 248, 256, 278, 304, 496, 556, 589, 608, 992, 1112, 1178, 1216, 1984, 2224, 2356, 2432, 2641, 3968, 4309, 4448, 4712, 4864, 5282, 7936, 8618, 8896, 9424, 10564, 17236, 17792, 18848, 21128, 34472, 35584, 37696, 42256, 68944, 75392, 81871, 84512, 137888, 150784, 163742, 169024, 275776, 327484, 338048, 551552, 654968, 676096, 1103104, 1309936, 2619872, 5239744, 10479488, 20958976]

約数ペア:

[(1, 20958976), (2, 10479488), (4, 5239744), (8, 2619872), (16, 1309936), (19, 1103104), (31, 676096), (32, 654968), (38, 551552), (62, 338048), (64, 327484), (76, 275776), (124, 169024), (128, 163742), (139, 150784), (152, 137888), (248, 84512), (256, 81871), (278, 75392), (304, 68944), (496, 42256), (556, 37696), (589, 35584), (608, 34472), (992, 21128), (1112, 18848), (1178, 17792), (1216, 17236), (1984, 10564), (2224, 9424), (2356, 8896), (2432, 8618), (2641, 7936), (3968, 5282), (4309, 4864), (4448, 4712)]