28202320

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 70508880

約数和(自身を除く): 42306560

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 89, 136, 170, 178, 233, 272, 340, 356, 445, 466, 680, 712, 890, 932, 1165, 1360, 1424, 1513, 1780, 1864, 2330, 3026, 3560, 3728, 3961, 4660, 6052, 7120, 7565, 7922, 9320, 12104, 15130, 15844, 18640, 19805, 20737, 24208, 30260, 31688, 39610, 41474, 60520, 63376, 79220, 82948, 103685, 121040, 158440, 165896, 207370, 316880, 331792, 352529, 414740, 705058, 829480, 1410116, 1658960, 1762645, 2820232, 3525290, 5640464, 7050580, 14101160, 28202320]

約数ペア:

[(1, 28202320), (2, 14101160), (4, 7050580), (5, 5640464), (8, 3525290), (10, 2820232), (16, 1762645), (17, 1658960), (20, 1410116), (34, 829480), (40, 705058), (68, 414740), (80, 352529), (85, 331792), (89, 316880), (136, 207370), (170, 165896), (178, 158440), (233, 121040), (272, 103685), (340, 82948), (356, 79220), (445, 63376), (466, 60520), (680, 41474), (712, 39610), (890, 31688), (932, 30260), (1165, 24208), (1360, 20737), (1424, 19805), (1513, 18640), (1780, 15844), (1864, 15130), (2330, 12104), (3026, 9320), (3560, 7922), (3728, 7565), (3961, 7120), (4660, 6052)]