19916640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13831}}^1$

素因数の和:13852

約数の個数: 72

約数和(自身を含む): 67970448

約数和(自身を除く): 48053808

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 13831, 27662, 41493, 55324, 69155, 82986, 110648, 124479, 138310, 165972, 207465, 221296, 248958, 276620, 331944, 414930, 442592, 497916, 553240, 622395, 663888, 829860, 995832, 1106480, 1244790, 1327776, 1659720, 1991664, 2212960, 2489580, 3319440, 3983328, 4979160, 6638880, 9958320, 19916640]

約数ペア:

[(1, 19916640), (2, 9958320), (3, 6638880), (4, 4979160), (5, 3983328), (6, 3319440), (8, 2489580), (9, 2212960), (10, 1991664), (12, 1659720), (15, 1327776), (16, 1244790), (18, 1106480), (20, 995832), (24, 829860), (30, 663888), (32, 622395), (36, 553240), (40, 497916), (45, 442592), (48, 414930), (60, 331944), (72, 276620), (80, 248958), (90, 221296), (96, 207465), (120, 165972), (144, 138310), (160, 124479), (180, 110648), (240, 82986), (288, 69155), (360, 55324), (480, 41493), (720, 27662), (1440, 13831)]