20743920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{613}}^1$

素因数の和:679

約数の個数: 120

約数和(自身を含む): 71263296

約数和(自身を除く): 50519376

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 120, 141, 144, 180, 188, 235, 240, 282, 360, 376, 423, 470, 564, 613, 705, 720, 752, 846, 940, 1128, 1226, 1410, 1692, 1839, 1880, 2115, 2256, 2452, 2820, 3065, 3384, 3678, 3760, 4230, 4904, 5517, 5640, 6130, 6768, 7356, 8460, 9195, 9808, 11034, 11280, 12260, 14712, 16920, 18390, 22068, 24520, 27585, 28811, 29424, 33840, 36780, 44136, 49040, 55170, 57622, 73560, 86433, 88272, 110340, 115244, 144055, 147120, 172866, 220680, 230488, 259299, 288110, 345732, 432165, 441360, 460976, 518598, 576220, 691464, 864330, 1037196, 1152440, 1296495, 1382928, 1728660, 2074392, 2304880, 2592990, 3457320, 4148784, 5185980, 6914640, 10371960, 20743920]

約数ペア:

[(1, 20743920), (2, 10371960), (3, 6914640), (4, 5185980), (5, 4148784), (6, 3457320), (8, 2592990), (9, 2304880), (10, 2074392), (12, 1728660), (15, 1382928), (16, 1296495), (18, 1152440), (20, 1037196), (24, 864330), (30, 691464), (36, 576220), (40, 518598), (45, 460976), (47, 441360), (48, 432165), (60, 345732), (72, 288110), (80, 259299), (90, 230488), (94, 220680), (120, 172866), (141, 147120), (144, 144055), (180, 115244), (188, 110340), (235, 88272), (240, 86433), (282, 73560), (360, 57622), (376, 55170), (423, 49040), (470, 44136), (564, 36780), (613, 33840), (705, 29424), (720, 28811), (752, 27585), (846, 24520), (940, 22068), (1128, 18390), (1226, 16920), (1410, 14712), (1692, 12260), (1839, 11280), (1880, 11034), (2115, 9808), (2256, 9195), (2452, 8460), (2820, 7356), (3065, 6768), (3384, 6130), (3678, 5640), (3760, 5517), (4230, 4904)]