20740680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3389}}^1$

素因数の和:3423

約数の個数: 96

約数和(自身を含む): 71393400

約数和(自身を除く): 50652720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3389, 6120, 6778, 10167, 13556, 16945, 20334, 27112, 30501, 33890, 40668, 50835, 57613, 61002, 67780, 81336, 101670, 115226, 122004, 135560, 152505, 172839, 203340, 230452, 244008, 288065, 305010, 345678, 406680, 460904, 518517, 576130, 610020, 691356, 864195, 1037034, 1152260, 1220040, 1382712, 1728390, 2074068, 2304520, 2592585, 3456780, 4148136, 5185170, 6913560, 10370340, 20740680]

約数ペア:

[(1, 20740680), (2, 10370340), (3, 6913560), (4, 5185170), (5, 4148136), (6, 3456780), (8, 2592585), (9, 2304520), (10, 2074068), (12, 1728390), (15, 1382712), (17, 1220040), (18, 1152260), (20, 1037034), (24, 864195), (30, 691356), (34, 610020), (36, 576130), (40, 518517), (45, 460904), (51, 406680), (60, 345678), (68, 305010), (72, 288065), (85, 244008), (90, 230452), (102, 203340), (120, 172839), (136, 152505), (153, 135560), (170, 122004), (180, 115226), (204, 101670), (255, 81336), (306, 67780), (340, 61002), (360, 57613), (408, 50835), (510, 40668), (612, 33890), (680, 30501), (765, 27112), (1020, 20334), (1224, 16945), (1530, 13556), (2040, 10167), (3060, 6778), (3389, 6120)]