20449408

素因数分解:

$2^7\times 7^1\times {\mathrm{29}}^1\times {\mathrm{787}}^1$

素因数の和:837

約数の個数: 64

約数和(自身を含む): 48225600

約数和(自身を除く): 27776192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 406, 448, 464, 787, 812, 896, 928, 1574, 1624, 1856, 3148, 3248, 3712, 5509, 6296, 6496, 11018, 12592, 12992, 22036, 22823, 25184, 25984, 44072, 45646, 50368, 88144, 91292, 100736, 159761, 176288, 182584, 319522, 352576, 365168, 639044, 705152, 730336, 1278088, 1460672, 2556176, 2921344, 5112352, 10224704, 20449408]

約数ペア:

[(1, 20449408), (2, 10224704), (4, 5112352), (7, 2921344), (8, 2556176), (14, 1460672), (16, 1278088), (28, 730336), (29, 705152), (32, 639044), (56, 365168), (58, 352576), (64, 319522), (112, 182584), (116, 176288), (128, 159761), (203, 100736), (224, 91292), (232, 88144), (406, 50368), (448, 45646), (464, 44072), (787, 25984), (812, 25184), (896, 22823), (928, 22036), (1574, 12992), (1624, 12592), (1856, 11018), (3148, 6496), (3248, 6296), (3712, 5509)]