638123344

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{31379}}^1$

素因数の和:31459

約数の個数: 40

約数和(自身を含む): 1307416320

約数和(自身を除く): 669292976

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 164, 248, 328, 496, 656, 1271, 2542, 5084, 10168, 20336, 31379, 62758, 125516, 251032, 502064, 972749, 1286539, 1945498, 2573078, 3890996, 5146156, 7781992, 10292312, 15563984, 20584624, 39882709, 79765418, 159530836, 319061672, 638123344]

約数ペア:

[(1, 638123344), (2, 319061672), (4, 159530836), (8, 79765418), (16, 39882709), (31, 20584624), (41, 15563984), (62, 10292312), (82, 7781992), (124, 5146156), (164, 3890996), (248, 2573078), (328, 1945498), (496, 1286539), (656, 972749), (1271, 502064), (2542, 251032), (5084, 125516), (10168, 62758), (20336, 31379)]