19954260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6521}}^1$

素因数の和:6553

約数の個数: 72

約数和(自身を含む): 64098216

約数和(自身を除く): 44143956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6521, 13042, 19563, 26084, 32605, 39126, 58689, 65210, 78252, 97815, 110857, 117378, 130420, 195630, 221714, 234756, 293445, 332571, 391260, 443428, 554285, 586890, 665142, 997713, 1108570, 1173780, 1330284, 1662855, 1995426, 2217140, 3325710, 3990852, 4988565, 6651420, 9977130, 19954260]

約数ペア:

[(1, 19954260), (2, 9977130), (3, 6651420), (4, 4988565), (5, 3990852), (6, 3325710), (9, 2217140), (10, 1995426), (12, 1662855), (15, 1330284), (17, 1173780), (18, 1108570), (20, 997713), (30, 665142), (34, 586890), (36, 554285), (45, 443428), (51, 391260), (60, 332571), (68, 293445), (85, 234756), (90, 221714), (102, 195630), (153, 130420), (170, 117378), (180, 110857), (204, 97815), (255, 78252), (306, 65210), (340, 58689), (510, 39126), (612, 32605), (765, 26084), (1020, 19563), (1530, 13042), (3060, 6521)]