20789520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{103}}^1$

素因数の和:177

約数の個数: 120

約数和(自身を含む): 67394496

約数和(自身を除く): 46604976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 29, 30, 40, 48, 58, 60, 80, 87, 103, 116, 120, 145, 174, 206, 232, 240, 290, 309, 348, 412, 435, 464, 515, 580, 618, 696, 824, 841, 870, 1030, 1160, 1236, 1392, 1545, 1648, 1682, 1740, 2060, 2320, 2472, 2523, 2987, 3090, 3364, 3480, 4120, 4205, 4944, 5046, 5974, 6180, 6728, 6960, 8240, 8410, 8961, 10092, 11948, 12360, 12615, 13456, 14935, 16820, 17922, 20184, 23896, 24720, 25230, 29870, 33640, 35844, 40368, 44805, 47792, 50460, 59740, 67280, 71688, 86623, 89610, 100920, 119480, 143376, 173246, 179220, 201840, 238960, 259869, 346492, 358440, 433115, 519738, 692984, 716880, 866230, 1039476, 1299345, 1385968, 1732460, 2078952, 2598690, 3464920, 4157904, 5197380, 6929840, 10394760, 20789520]

約数ペア:

[(1, 20789520), (2, 10394760), (3, 6929840), (4, 5197380), (5, 4157904), (6, 3464920), (8, 2598690), (10, 2078952), (12, 1732460), (15, 1385968), (16, 1299345), (20, 1039476), (24, 866230), (29, 716880), (30, 692984), (40, 519738), (48, 433115), (58, 358440), (60, 346492), (80, 259869), (87, 238960), (103, 201840), (116, 179220), (120, 173246), (145, 143376), (174, 119480), (206, 100920), (232, 89610), (240, 86623), (290, 71688), (309, 67280), (348, 59740), (412, 50460), (435, 47792), (464, 44805), (515, 40368), (580, 35844), (618, 33640), (696, 29870), (824, 25230), (841, 24720), (870, 23896), (1030, 20184), (1160, 17922), (1236, 16820), (1392, 14935), (1545, 13456), (1648, 12615), (1682, 12360), (1740, 11948), (2060, 10092), (2320, 8961), (2472, 8410), (2523, 8240), (2987, 6960), (3090, 6728), (3364, 6180), (3480, 5974), (4120, 5046), (4205, 4944)]