20212682480

素因数分解:

$2^4\times 5^1\times {\mathrm{433}}^1\times {\mathrm{709}}^1\times {\mathrm{823}}^1$

素因数の和:1978

約数の個数: 80

約数和(自身を含む): 47226768960

約数和(自身を除く): 27014086480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 433, 709, 823, 866, 1418, 1646, 1732, 2165, 2836, 3292, 3464, 3545, 4115, 4330, 5672, 6584, 6928, 7090, 8230, 8660, 11344, 13168, 14180, 16460, 17320, 28360, 32920, 34640, 56720, 65840, 306997, 356359, 583507, 613994, 712718, 1167014, 1227988, 1425436, 1534985, 1781795, 2334028, 2455976, 2850872, 2917535, 3069970, 3563590, 4668056, 4911952, 5701744, 5835070, 6139940, 7127180, 9336112, 11670140, 12279880, 14254360, 23340280, 24559760, 28508720, 46680560, 252658531, 505317062, 1010634124, 1263292655, 2021268248, 2526585310, 4042536496, 5053170620, 10106341240, 20212682480]

約数ペア:

[(1, 20212682480), (2, 10106341240), (4, 5053170620), (5, 4042536496), (8, 2526585310), (10, 2021268248), (16, 1263292655), (20, 1010634124), (40, 505317062), (80, 252658531), (433, 46680560), (709, 28508720), (823, 24559760), (866, 23340280), (1418, 14254360), (1646, 12279880), (1732, 11670140), (2165, 9336112), (2836, 7127180), (3292, 6139940), (3464, 5835070), (3545, 5701744), (4115, 4911952), (4330, 4668056), (5672, 3563590), (6584, 3069970), (6928, 2917535), (7090, 2850872), (8230, 2455976), (8660, 2334028), (11344, 1781795), (13168, 1534985), (14180, 1425436), (16460, 1227988), (17320, 1167014), (28360, 712718), (32920, 613994), (34640, 583507), (56720, 356359), (65840, 306997)]