1721000780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{3769}}^1$

素因数の和:3891

約数の個数: 72

約数和(自身を含む): 3888830400

約数和(自身を除く): 2167829620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 158, 170, 289, 316, 340, 395, 578, 790, 1156, 1343, 1445, 1580, 2686, 2890, 3769, 5372, 5780, 6715, 7538, 13430, 15076, 18845, 22831, 26860, 37690, 45662, 64073, 75380, 91324, 114155, 128146, 228310, 256292, 297751, 320365, 456620, 595502, 640730, 1089241, 1191004, 1281460, 1488755, 2178482, 2977510, 4356964, 5061767, 5446205, 5955020, 10123534, 10892410, 20247068, 21784820, 25308835, 50617670, 86050039, 101235340, 172100078, 344200156, 430250195, 860500390, 1721000780]

約数ペア:

[(1, 1721000780), (2, 860500390), (4, 430250195), (5, 344200156), (10, 172100078), (17, 101235340), (20, 86050039), (34, 50617670), (68, 25308835), (79, 21784820), (85, 20247068), (158, 10892410), (170, 10123534), (289, 5955020), (316, 5446205), (340, 5061767), (395, 4356964), (578, 2977510), (790, 2178482), (1156, 1488755), (1343, 1281460), (1445, 1191004), (1580, 1089241), (2686, 640730), (2890, 595502), (3769, 456620), (5372, 320365), (5780, 297751), (6715, 256292), (7538, 228310), (13430, 128146), (15076, 114155), (18845, 91324), (22831, 75380), (26860, 64073), (37690, 45662)]