20649472

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1301}}^1$

素因数の和:1350

約数の個数: 40

約数和(自身を含む): 42622272

約数和(自身を除く): 21972800

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1301, 1984, 2602, 3968, 5204, 7936, 10408, 15872, 20816, 40331, 41632, 80662, 83264, 161324, 166528, 322648, 333056, 645296, 666112, 1290592, 2581184, 5162368, 10324736, 20649472]

約数ペア:

[(1, 20649472), (2, 10324736), (4, 5162368), (8, 2581184), (16, 1290592), (31, 666112), (32, 645296), (62, 333056), (64, 322648), (124, 166528), (128, 161324), (248, 83264), (256, 80662), (496, 41632), (512, 40331), (992, 20816), (1301, 15872), (1984, 10408), (2602, 7936), (3968, 5204)]