19943540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1693}}^1$

素因数の和:1752

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 25591180

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1693, 2356, 2945, 3386, 5890, 6772, 8465, 11780, 16930, 32167, 33860, 52483, 64334, 104966, 128668, 160835, 209932, 262415, 321670, 524830, 643340, 997177, 1049660, 1994354, 3988708, 4985885, 9971770, 19943540]

約数ペア:

[(1, 19943540), (2, 9971770), (4, 4985885), (5, 3988708), (10, 1994354), (19, 1049660), (20, 997177), (31, 643340), (38, 524830), (62, 321670), (76, 262415), (95, 209932), (124, 160835), (155, 128668), (190, 104966), (310, 64334), (380, 52483), (589, 33860), (620, 32167), (1178, 16930), (1693, 11780), (2356, 8465), (2945, 6772), (3386, 5890)]