20554700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 48090672

約数和(自身を除く): 27535972

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 107, 113, 170, 214, 226, 340, 425, 428, 452, 535, 565, 850, 1070, 1130, 1700, 1819, 1921, 2140, 2260, 2675, 2825, 3638, 3842, 5350, 5650, 7276, 7684, 9095, 9605, 10700, 11300, 12091, 18190, 19210, 24182, 36380, 38420, 45475, 48025, 48364, 60455, 90950, 96050, 120910, 181900, 192100, 205547, 241820, 302275, 411094, 604550, 822188, 1027735, 1209100, 2055470, 4110940, 5138675, 10277350, 20554700]

約数ペア:

[(1, 20554700), (2, 10277350), (4, 5138675), (5, 4110940), (10, 2055470), (17, 1209100), (20, 1027735), (25, 822188), (34, 604550), (50, 411094), (68, 302275), (85, 241820), (100, 205547), (107, 192100), (113, 181900), (170, 120910), (214, 96050), (226, 90950), (340, 60455), (425, 48364), (428, 48025), (452, 45475), (535, 38420), (565, 36380), (850, 24182), (1070, 19210), (1130, 18190), (1700, 12091), (1819, 11300), (1921, 10700), (2140, 9605), (2260, 9095), (2675, 7684), (2825, 7276), (3638, 5650), (3842, 5350)]