20303780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:501

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 34128220

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 28, 34, 35, 38, 68, 70, 76, 85, 95, 119, 133, 140, 170, 190, 238, 266, 323, 340, 380, 449, 476, 532, 595, 646, 665, 898, 1190, 1292, 1330, 1615, 1796, 2245, 2261, 2380, 2660, 3143, 3230, 4490, 4522, 6286, 6460, 7633, 8531, 8980, 9044, 11305, 12572, 15266, 15715, 17062, 22610, 30532, 31430, 34124, 38165, 42655, 45220, 53431, 59717, 62860, 76330, 85310, 106862, 119434, 145027, 152660, 170620, 213724, 238868, 267155, 290054, 298585, 534310, 580108, 597170, 725135, 1015189, 1068620, 1194340, 1450270, 2030378, 2900540, 4060756, 5075945, 10151890, 20303780]

約数ペア:

[(1, 20303780), (2, 10151890), (4, 5075945), (5, 4060756), (7, 2900540), (10, 2030378), (14, 1450270), (17, 1194340), (19, 1068620), (20, 1015189), (28, 725135), (34, 597170), (35, 580108), (38, 534310), (68, 298585), (70, 290054), (76, 267155), (85, 238868), (95, 213724), (119, 170620), (133, 152660), (140, 145027), (170, 119434), (190, 106862), (238, 85310), (266, 76330), (323, 62860), (340, 59717), (380, 53431), (449, 45220), (476, 42655), (532, 38165), (595, 34124), (646, 31430), (665, 30532), (898, 22610), (1190, 17062), (1292, 15715), (1330, 15266), (1615, 12572), (1796, 11305), (2245, 9044), (2261, 8980), (2380, 8531), (2660, 7633), (3143, 6460), (3230, 6286), (4490, 4522)]