28279860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9619}}^1$

素因数の和:9645

約数の個数: 72

約数和(自身を含む): 92121120

約数和(自身を除く): 63841260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9619, 19238, 28857, 38476, 48095, 57714, 67333, 96190, 115428, 134666, 144285, 192380, 201999, 269332, 288570, 336665, 403998, 471331, 577140, 673330, 807996, 942662, 1009995, 1346660, 1413993, 1885324, 2019990, 2356655, 2827986, 4039980, 4713310, 5655972, 7069965, 9426620, 14139930, 28279860]

約数ペア:

[(1, 28279860), (2, 14139930), (3, 9426620), (4, 7069965), (5, 5655972), (6, 4713310), (7, 4039980), (10, 2827986), (12, 2356655), (14, 2019990), (15, 1885324), (20, 1413993), (21, 1346660), (28, 1009995), (30, 942662), (35, 807996), (42, 673330), (49, 577140), (60, 471331), (70, 403998), (84, 336665), (98, 288570), (105, 269332), (140, 201999), (147, 192380), (196, 144285), (210, 134666), (245, 115428), (294, 96190), (420, 67333), (490, 57714), (588, 48095), (735, 38476), (980, 28857), (1470, 19238), (2940, 9619)]