643356

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:80

約数の個数: 96

約数和(自身を含む): 2042880

約数和(自身を除く): 1399524

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 37, 42, 46, 54, 63, 69, 74, 84, 92, 108, 111, 126, 138, 148, 161, 189, 207, 222, 252, 259, 276, 322, 333, 378, 414, 444, 483, 518, 621, 644, 666, 756, 777, 828, 851, 966, 999, 1036, 1242, 1332, 1449, 1554, 1702, 1932, 1998, 2331, 2484, 2553, 2898, 3108, 3404, 3996, 4347, 4662, 5106, 5796, 5957, 6993, 7659, 8694, 9324, 10212, 11914, 13986, 15318, 17388, 17871, 22977, 23828, 27972, 30636, 35742, 45954, 53613, 71484, 91908, 107226, 160839, 214452, 321678, 643356]

約数ペア:

[(1, 643356), (2, 321678), (3, 214452), (4, 160839), (6, 107226), (7, 91908), (9, 71484), (12, 53613), (14, 45954), (18, 35742), (21, 30636), (23, 27972), (27, 23828), (28, 22977), (36, 17871), (37, 17388), (42, 15318), (46, 13986), (54, 11914), (63, 10212), (69, 9324), (74, 8694), (84, 7659), (92, 6993), (108, 5957), (111, 5796), (126, 5106), (138, 4662), (148, 4347), (161, 3996), (189, 3404), (207, 3108), (222, 2898), (252, 2553), (259, 2484), (276, 2331), (322, 1998), (333, 1932), (378, 1702), (414, 1554), (444, 1449), (483, 1332), (518, 1242), (621, 1036), (644, 999), (666, 966), (756, 851), (777, 828)]