19945560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{479}}^1$

素因数の和:840

約数の個数: 64

約数和(自身を含む): 60134400

約数和(自身を除く): 40188840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 347, 479, 694, 958, 1041, 1388, 1437, 1735, 1916, 2082, 2395, 2776, 2874, 3470, 3832, 4164, 4790, 5205, 5748, 6940, 7185, 8328, 9580, 10410, 11496, 13880, 14370, 19160, 20820, 28740, 41640, 57480, 166213, 332426, 498639, 664852, 831065, 997278, 1329704, 1662130, 1994556, 2493195, 3324260, 3989112, 4986390, 6648520, 9972780, 19945560]

約数ペア:

[(1, 19945560), (2, 9972780), (3, 6648520), (4, 4986390), (5, 3989112), (6, 3324260), (8, 2493195), (10, 1994556), (12, 1662130), (15, 1329704), (20, 997278), (24, 831065), (30, 664852), (40, 498639), (60, 332426), (120, 166213), (347, 57480), (479, 41640), (694, 28740), (958, 20820), (1041, 19160), (1388, 14370), (1437, 13880), (1735, 11496), (1916, 10410), (2082, 9580), (2395, 8328), (2776, 7185), (2874, 6940), (3470, 5748), (3832, 5205), (4164, 4790)]