18781040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7573}}^1$

素因数の和:7617

約数の個数: 40

約数和(自身を含む): 45080448

約数和(自身を除く): 26299408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7573, 15146, 30292, 37865, 60584, 75730, 121168, 151460, 234763, 302920, 469526, 605840, 939052, 1173815, 1878104, 2347630, 3756208, 4695260, 9390520, 18781040]

約数ペア:

[(1, 18781040), (2, 9390520), (4, 4695260), (5, 3756208), (8, 2347630), (10, 1878104), (16, 1173815), (20, 939052), (31, 605840), (40, 469526), (62, 302920), (80, 234763), (124, 151460), (155, 121168), (248, 75730), (310, 60584), (496, 37865), (620, 30292), (1240, 15146), (2480, 7573)]