15680420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3613}}^1$

素因数の和:3660

約数の個数: 48

約数和(自身を含む): 38857728

約数和(自身を除く): 23177308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 3613, 4340, 7226, 14452, 18065, 25291, 36130, 50582, 72260, 101164, 112003, 126455, 224006, 252910, 448012, 505820, 560015, 784021, 1120030, 1568042, 2240060, 3136084, 3920105, 7840210, 15680420]

約数ペア:

[(1, 15680420), (2, 7840210), (4, 3920105), (5, 3136084), (7, 2240060), (10, 1568042), (14, 1120030), (20, 784021), (28, 560015), (31, 505820), (35, 448012), (62, 252910), (70, 224006), (124, 126455), (140, 112003), (155, 101164), (217, 72260), (310, 50582), (434, 36130), (620, 25291), (868, 18065), (1085, 14452), (2170, 7226), (3613, 4340)]