18728464

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{619}}^1$

素因数の和:719

約数の個数: 40

約数和(自身を含む): 38132480

約数和(自身を除く): 19404016

約数列:

[1, 2, 4, 8, 16, 31, 61, 62, 122, 124, 244, 248, 488, 496, 619, 976, 1238, 1891, 2476, 3782, 4952, 7564, 9904, 15128, 19189, 30256, 37759, 38378, 75518, 76756, 151036, 153512, 302072, 307024, 604144, 1170529, 2341058, 4682116, 9364232, 18728464]

約数ペア:

[(1, 18728464), (2, 9364232), (4, 4682116), (8, 2341058), (16, 1170529), (31, 604144), (61, 307024), (62, 302072), (122, 153512), (124, 151036), (244, 76756), (248, 75518), (488, 38378), (496, 37759), (619, 30256), (976, 19189), (1238, 15128), (1891, 9904), (2476, 7564), (3782, 4952)]