21509103620

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1\times {\mathrm{64019}}^1$

素因数の和:64292

約数の個数: 48

約数和(自身を含む): 45882365760

約数和(自身を除く): 24373262140

約数列:

[1, 2, 4, 5, 10, 20, 107, 157, 214, 314, 428, 535, 628, 785, 1070, 1570, 2140, 3140, 16799, 33598, 64019, 67196, 83995, 128038, 167990, 256076, 320095, 335980, 640190, 1280380, 6850033, 10050983, 13700066, 20101966, 27400132, 34250165, 40203932, 50254915, 68500330, 100509830, 137000660, 201019660, 1075455181, 2150910362, 4301820724, 5377275905, 10754551810, 21509103620]

約数ペア:

[(1, 21509103620), (2, 10754551810), (4, 5377275905), (5, 4301820724), (10, 2150910362), (20, 1075455181), (107, 201019660), (157, 137000660), (214, 100509830), (314, 68500330), (428, 50254915), (535, 40203932), (628, 34250165), (785, 27400132), (1070, 20101966), (1570, 13700066), (2140, 10050983), (3140, 6850033), (16799, 1280380), (33598, 640190), (64019, 335980), (67196, 320095), (83995, 256076), (128038, 167990)]