28890290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 62052480

約数和(自身を除く): 33162190

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 89, 110, 130, 143, 178, 227, 286, 445, 454, 715, 890, 979, 1135, 1157, 1430, 1958, 2270, 2314, 2497, 2951, 4895, 4994, 5785, 5902, 9790, 11570, 12485, 12727, 14755, 20203, 24970, 25454, 29510, 32461, 40406, 63635, 64922, 101015, 127270, 162305, 202030, 222233, 262639, 324610, 444466, 525278, 1111165, 1313195, 2222330, 2626390, 2889029, 5778058, 14445145, 28890290]

約数ペア:

[(1, 28890290), (2, 14445145), (5, 5778058), (10, 2889029), (11, 2626390), (13, 2222330), (22, 1313195), (26, 1111165), (55, 525278), (65, 444466), (89, 324610), (110, 262639), (130, 222233), (143, 202030), (178, 162305), (227, 127270), (286, 101015), (445, 64922), (454, 63635), (715, 40406), (890, 32461), (979, 29510), (1135, 25454), (1157, 24970), (1430, 20203), (1958, 14755), (2270, 12727), (2314, 12485), (2497, 11570), (2951, 9790), (4895, 5902), (4994, 5785)]