15617720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 36741600

約数和(自身を除く): 21123880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 89, 107, 164, 178, 205, 214, 328, 356, 410, 428, 445, 535, 712, 820, 856, 890, 1070, 1640, 1780, 2140, 3560, 3649, 4280, 4387, 7298, 8774, 9523, 14596, 17548, 18245, 19046, 21935, 29192, 35096, 36490, 38092, 43870, 47615, 72980, 76184, 87740, 95230, 145960, 175480, 190460, 380920, 390443, 780886, 1561772, 1952215, 3123544, 3904430, 7808860, 15617720]

約数ペア:

[(1, 15617720), (2, 7808860), (4, 3904430), (5, 3123544), (8, 1952215), (10, 1561772), (20, 780886), (40, 390443), (41, 380920), (82, 190460), (89, 175480), (107, 145960), (164, 95230), (178, 87740), (205, 76184), (214, 72980), (328, 47615), (356, 43870), (410, 38092), (428, 36490), (445, 35096), (535, 29192), (712, 21935), (820, 19046), (856, 18245), (890, 17548), (1070, 14596), (1640, 9523), (1780, 8774), (2140, 7298), (3560, 4387), (3649, 4280)]