21724180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{947}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 48416256

約数和(自身を除く): 26692076

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 740, 947, 1147, 1894, 2294, 3788, 4588, 4735, 5735, 9470, 11470, 18940, 22940, 29357, 35039, 58714, 70078, 117428, 140156, 146785, 175195, 293570, 350390, 587140, 700780, 1086209, 2172418, 4344836, 5431045, 10862090, 21724180]

約数ペア:

[(1, 21724180), (2, 10862090), (4, 5431045), (5, 4344836), (10, 2172418), (20, 1086209), (31, 700780), (37, 587140), (62, 350390), (74, 293570), (124, 175195), (148, 146785), (155, 140156), (185, 117428), (310, 70078), (370, 58714), (620, 35039), (740, 29357), (947, 22940), (1147, 18940), (1894, 11470), (2294, 9470), (3788, 5735), (4588, 4735)]