19774860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 44092020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 197, 210, 239, 394, 420, 478, 591, 717, 788, 956, 985, 1182, 1195, 1379, 1434, 1673, 1970, 2364, 2390, 2758, 2868, 2955, 3346, 3585, 3940, 4137, 4780, 5019, 5516, 5910, 6692, 6895, 7170, 8274, 8365, 10038, 11820, 13790, 14340, 16548, 16730, 20076, 20685, 25095, 27580, 33460, 41370, 47083, 50190, 82740, 94166, 100380, 141249, 188332, 235415, 282498, 329581, 470830, 564996, 659162, 706245, 941660, 988743, 1318324, 1412490, 1647905, 1977486, 2824980, 3295810, 3954972, 4943715, 6591620, 9887430, 19774860]

約数ペア:

[(1, 19774860), (2, 9887430), (3, 6591620), (4, 4943715), (5, 3954972), (6, 3295810), (7, 2824980), (10, 1977486), (12, 1647905), (14, 1412490), (15, 1318324), (20, 988743), (21, 941660), (28, 706245), (30, 659162), (35, 564996), (42, 470830), (60, 329581), (70, 282498), (84, 235415), (105, 188332), (140, 141249), (197, 100380), (210, 94166), (239, 82740), (394, 50190), (420, 47083), (478, 41370), (591, 33460), (717, 27580), (788, 25095), (956, 20685), (985, 20076), (1182, 16730), (1195, 16548), (1379, 14340), (1434, 13790), (1673, 11820), (1970, 10038), (2364, 8365), (2390, 8274), (2758, 7170), (2868, 6895), (2955, 6692), (3346, 5910), (3585, 5516), (3940, 5019), (4137, 4780)]