20385720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3331}}^1$

素因数の和:3365

約数の個数: 96

約数和(自身を含む): 70171920

約数和(自身を除く): 49786200

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, 3331, 6120, 6662, 9993, 13324, 16655, 19986, 26648, 29979, 33310, 39972, 49965, 56627, 59958, 66620, 79944, 99930, 113254, 119916, 133240, 149895, 169881, 199860, 226508, 239832, 283135, 299790, 339762, 399720, 453016, 509643, 566270, 599580, 679524, 849405, 1019286, 1132540, 1199160, 1359048, 1698810, 2038572, 2265080, 2548215, 3397620, 4077144, 5096430, 6795240, 10192860, 20385720]

約数ペア:

[(1, 20385720), (2, 10192860), (3, 6795240), (4, 5096430), (5, 4077144), (6, 3397620), (8, 2548215), (9, 2265080), (10, 2038572), (12, 1698810), (15, 1359048), (17, 1199160), (18, 1132540), (20, 1019286), (24, 849405), (30, 679524), (34, 599580), (36, 566270), (40, 509643), (45, 453016), (51, 399720), (60, 339762), (68, 299790), (72, 283135), (85, 239832), (90, 226508), (102, 199860), (120, 169881), (136, 149895), (153, 133240), (170, 119916), (180, 113254), (204, 99930), (255, 79944), (306, 66620), (340, 59958), (360, 56627), (408, 49965), (510, 39972), (612, 33310), (680, 29979), (765, 26648), (1020, 19986), (1224, 16655), (1530, 13324), (2040, 9993), (3060, 6662), (3331, 6120)]