19681220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1283}}^1$

素因数の和:1364

約数の個数: 48

約数和(自身を含む): 45299520

約数和(自身を除く): 25618300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 295, 590, 767, 1180, 1283, 1534, 2566, 3068, 3835, 5132, 6415, 7670, 12830, 15340, 16679, 25660, 33358, 66716, 75697, 83395, 151394, 166790, 302788, 333580, 378485, 756970, 984061, 1513940, 1968122, 3936244, 4920305, 9840610, 19681220]

約数ペア:

[(1, 19681220), (2, 9840610), (4, 4920305), (5, 3936244), (10, 1968122), (13, 1513940), (20, 984061), (26, 756970), (52, 378485), (59, 333580), (65, 302788), (118, 166790), (130, 151394), (236, 83395), (260, 75697), (295, 66716), (590, 33358), (767, 25660), (1180, 16679), (1283, 15340), (1534, 12830), (2566, 7670), (3068, 6415), (3835, 5132)]