15801520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 120

約数和(自身を含む): 44528400

約数和(自身を除く): 28726880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 139, 140, 145, 196, 203, 232, 245, 278, 280, 290, 392, 406, 464, 490, 556, 560, 580, 695, 784, 812, 973, 980, 1015, 1112, 1160, 1390, 1421, 1624, 1946, 1960, 2030, 2224, 2320, 2780, 2842, 3248, 3892, 3920, 4031, 4060, 4865, 5560, 5684, 6811, 7105, 7784, 8062, 8120, 9730, 11120, 11368, 13622, 14210, 15568, 16124, 16240, 19460, 20155, 22736, 27244, 28217, 28420, 32248, 34055, 38920, 40310, 54488, 56434, 56840, 64496, 68110, 77840, 80620, 108976, 112868, 113680, 136220, 141085, 161240, 197519, 225736, 272440, 282170, 322480, 395038, 451472, 544880, 564340, 790076, 987595, 1128680, 1580152, 1975190, 2257360, 3160304, 3950380, 7900760, 15801520]

約数ペア:

[(1, 15801520), (2, 7900760), (4, 3950380), (5, 3160304), (7, 2257360), (8, 1975190), (10, 1580152), (14, 1128680), (16, 987595), (20, 790076), (28, 564340), (29, 544880), (35, 451472), (40, 395038), (49, 322480), (56, 282170), (58, 272440), (70, 225736), (80, 197519), (98, 161240), (112, 141085), (116, 136220), (139, 113680), (140, 112868), (145, 108976), (196, 80620), (203, 77840), (232, 68110), (245, 64496), (278, 56840), (280, 56434), (290, 54488), (392, 40310), (406, 38920), (464, 34055), (490, 32248), (556, 28420), (560, 28217), (580, 27244), (695, 22736), (784, 20155), (812, 19460), (973, 16240), (980, 16124), (1015, 15568), (1112, 14210), (1160, 13622), (1390, 11368), (1421, 11120), (1624, 9730), (1946, 8120), (1960, 8062), (2030, 7784), (2224, 7105), (2320, 6811), (2780, 5684), (2842, 5560), (3248, 4865), (3892, 4060), (3920, 4031)]