18924880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 48996864

約数和(自身を除く): 30071984

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 587, 620, 806, 1040, 1174, 1240, 1612, 2015, 2348, 2480, 2935, 3224, 4030, 4696, 5870, 6448, 7631, 8060, 9392, 11740, 15262, 16120, 18197, 23480, 30524, 32240, 36394, 38155, 46960, 61048, 72788, 76310, 90985, 122096, 145576, 152620, 181970, 236561, 291152, 305240, 363940, 473122, 610480, 727880, 946244, 1182805, 1455760, 1892488, 2365610, 3784976, 4731220, 9462440, 18924880]

約数ペア:

[(1, 18924880), (2, 9462440), (4, 4731220), (5, 3784976), (8, 2365610), (10, 1892488), (13, 1455760), (16, 1182805), (20, 946244), (26, 727880), (31, 610480), (40, 473122), (52, 363940), (62, 305240), (65, 291152), (80, 236561), (104, 181970), (124, 152620), (130, 145576), (155, 122096), (208, 90985), (248, 76310), (260, 72788), (310, 61048), (403, 46960), (496, 38155), (520, 36394), (587, 32240), (620, 30524), (806, 23480), (1040, 18197), (1174, 16120), (1240, 15262), (1612, 11740), (2015, 9392), (2348, 8060), (2480, 7631), (2935, 6448), (3224, 5870), (4030, 4696)]