21277881835

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{5449}}^1$

素因数の和:5612

約数の個数: 64

約数和(自身を含む): 31140864000

約数和(自身を除く): 9862982165

約数列:

[1, 5, 7, 31, 35, 59, 61, 155, 217, 295, 305, 413, 427, 1085, 1829, 1891, 2065, 2135, 3599, 5449, 9145, 9455, 12803, 13237, 17995, 25193, 27245, 38143, 64015, 66185, 111569, 125965, 168919, 190715, 321491, 332389, 557845, 780983, 844595, 1182433, 1607455, 1661945, 2250437, 2326723, 3904915, 5912165, 9966221, 10304059, 11252185, 11633615, 19610951, 49831105, 51520295, 69763547, 72128413, 98054755, 137276657, 348817735, 360642065, 607939481, 686383285, 3039697405, 4255576367, 21277881835]

約数ペア:

[(1, 21277881835), (5, 4255576367), (7, 3039697405), (31, 686383285), (35, 607939481), (59, 360642065), (61, 348817735), (155, 137276657), (217, 98054755), (295, 72128413), (305, 69763547), (413, 51520295), (427, 49831105), (1085, 19610951), (1829, 11633615), (1891, 11252185), (2065, 10304059), (2135, 9966221), (3599, 5912165), (5449, 3904915), (9145, 2326723), (9455, 2250437), (12803, 1661945), (13237, 1607455), (17995, 1182433), (25193, 844595), (27245, 780983), (38143, 557845), (64015, 332389), (66185, 321491), (111569, 190715), (125965, 168919)]