28291120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2473}}^1$

素因数の和:2510

約数の個数: 80

約数和(自身を含む): 77307552

約数和(自身を除く): 49016432

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2473, 2860, 4946, 5720, 9892, 11440, 12365, 19784, 24730, 27203, 32149, 39568, 49460, 54406, 64298, 98920, 108812, 128596, 136015, 160745, 197840, 217624, 257192, 272030, 321490, 353639, 435248, 514384, 544060, 642980, 707278, 1088120, 1285960, 1414556, 1768195, 2176240, 2571920, 2829112, 3536390, 5658224, 7072780, 14145560, 28291120]

約数ペア:

[(1, 28291120), (2, 14145560), (4, 7072780), (5, 5658224), (8, 3536390), (10, 2829112), (11, 2571920), (13, 2176240), (16, 1768195), (20, 1414556), (22, 1285960), (26, 1088120), (40, 707278), (44, 642980), (52, 544060), (55, 514384), (65, 435248), (80, 353639), (88, 321490), (104, 272030), (110, 257192), (130, 217624), (143, 197840), (176, 160745), (208, 136015), (220, 128596), (260, 108812), (286, 98920), (440, 64298), (520, 54406), (572, 49460), (715, 39568), (880, 32149), (1040, 27203), (1144, 24730), (1430, 19784), (2288, 12365), (2473, 11440), (2860, 9892), (4946, 5720)]