18864220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 42402528

約数和(自身を除く): 23538308

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 491, 565, 982, 1130, 1921, 1964, 2260, 2455, 3842, 4910, 7684, 8347, 9605, 9820, 16694, 19210, 33388, 38420, 41735, 55483, 83470, 110966, 166940, 221932, 277415, 554830, 943211, 1109660, 1886422, 3772844, 4716055, 9432110, 18864220]

約数ペア:

[(1, 18864220), (2, 9432110), (4, 4716055), (5, 3772844), (10, 1886422), (17, 1109660), (20, 943211), (34, 554830), (68, 277415), (85, 221932), (113, 166940), (170, 110966), (226, 83470), (340, 55483), (452, 41735), (491, 38420), (565, 33388), (982, 19210), (1130, 16694), (1921, 9820), (1964, 9605), (2260, 8347), (2455, 7684), (3842, 4910)]