20056545

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 17959455

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 47, 87, 109, 135, 141, 145, 235, 261, 327, 423, 435, 545, 705, 783, 981, 1269, 1305, 1363, 1635, 2115, 2943, 3161, 3915, 4089, 4905, 5123, 6345, 6815, 9483, 12267, 14715, 15369, 15805, 20445, 25615, 28449, 36801, 46107, 47415, 61335, 76845, 85347, 138321, 142245, 148567, 184005, 230535, 426735, 445701, 691605, 742835, 1337103, 2228505, 4011309, 6685515, 20056545]

約数ペア:

[(1, 20056545), (3, 6685515), (5, 4011309), (9, 2228505), (15, 1337103), (27, 742835), (29, 691605), (45, 445701), (47, 426735), (87, 230535), (109, 184005), (135, 148567), (141, 142245), (145, 138321), (235, 85347), (261, 76845), (327, 61335), (423, 47415), (435, 46107), (545, 36801), (705, 28449), (783, 25615), (981, 20445), (1269, 15805), (1305, 15369), (1363, 14715), (1635, 12267), (2115, 9483), (2943, 6815), (3161, 6345), (3915, 5123), (4089, 4905)]