20019440

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5107}}^1$

素因数の和:5134

約数の個数: 60

約数和(自身を含む): 54155016

約数和(自身を除く): 34135576

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5107, 10214, 20428, 25535, 35749, 40856, 51070, 71498, 81712, 102140, 142996, 178745, 204280, 250243, 285992, 357490, 408560, 500486, 571984, 714980, 1000972, 1251215, 1429960, 2001944, 2502430, 2859920, 4003888, 5004860, 10009720, 20019440]

約数ペア:

[(1, 20019440), (2, 10009720), (4, 5004860), (5, 4003888), (7, 2859920), (8, 2502430), (10, 2001944), (14, 1429960), (16, 1251215), (20, 1000972), (28, 714980), (35, 571984), (40, 500486), (49, 408560), (56, 357490), (70, 285992), (80, 250243), (98, 204280), (112, 178745), (140, 142996), (196, 102140), (245, 81712), (280, 71498), (392, 51070), (490, 40856), (560, 35749), (784, 25535), (980, 20428), (1960, 10214), (3920, 5107)]