1555890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 4423680

約数和(自身を除く): 2867790

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 31, 35, 42, 62, 70, 93, 105, 155, 186, 210, 217, 239, 310, 434, 465, 478, 651, 717, 930, 1085, 1195, 1302, 1434, 1673, 2170, 2390, 3255, 3346, 3585, 5019, 6510, 7170, 7409, 8365, 10038, 14818, 16730, 22227, 25095, 37045, 44454, 50190, 51863, 74090, 103726, 111135, 155589, 222270, 259315, 311178, 518630, 777945, 1555890]

約数ペア:

[(1, 1555890), (2, 777945), (3, 518630), (5, 311178), (6, 259315), (7, 222270), (10, 155589), (14, 111135), (15, 103726), (21, 74090), (30, 51863), (31, 50190), (35, 44454), (42, 37045), (62, 25095), (70, 22227), (93, 16730), (105, 14818), (155, 10038), (186, 8365), (210, 7409), (217, 7170), (239, 6510), (310, 5019), (434, 3585), (465, 3346), (478, 3255), (651, 2390), (717, 2170), (930, 1673), (1085, 1434), (1195, 1302)]