21750640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11821}}^1$

素因数の和:11857

約数の個数: 40

約数和(自身を含む): 52773408

約数和(自身を除く): 31022768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11821, 23642, 47284, 59105, 94568, 118210, 189136, 236420, 271883, 472840, 543766, 945680, 1087532, 1359415, 2175064, 2718830, 4350128, 5437660, 10875320, 21750640]

約数ペア:

[(1, 21750640), (2, 10875320), (4, 5437660), (5, 4350128), (8, 2718830), (10, 2175064), (16, 1359415), (20, 1087532), (23, 945680), (40, 543766), (46, 472840), (80, 271883), (92, 236420), (115, 189136), (184, 118210), (230, 94568), (368, 59105), (460, 47284), (920, 23642), (1840, 11821)]