28218320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:700

約数の個数: 80

約数和(自身を含む): 72412032

約数和(自身を除く): 44193712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 631, 688, 860, 1040, 1118, 1262, 1720, 2236, 2524, 2795, 3155, 3440, 4472, 5048, 5590, 6310, 8203, 8944, 10096, 11180, 12620, 16406, 22360, 25240, 27133, 32812, 41015, 44720, 50480, 54266, 65624, 82030, 108532, 131248, 135665, 164060, 217064, 271330, 328120, 352729, 434128, 542660, 656240, 705458, 1085320, 1410916, 1763645, 2170640, 2821832, 3527290, 5643664, 7054580, 14109160, 28218320]

約数ペア:

[(1, 28218320), (2, 14109160), (4, 7054580), (5, 5643664), (8, 3527290), (10, 2821832), (13, 2170640), (16, 1763645), (20, 1410916), (26, 1085320), (40, 705458), (43, 656240), (52, 542660), (65, 434128), (80, 352729), (86, 328120), (104, 271330), (130, 217064), (172, 164060), (208, 135665), (215, 131248), (260, 108532), (344, 82030), (430, 65624), (520, 54266), (559, 50480), (631, 44720), (688, 41015), (860, 32812), (1040, 27133), (1118, 25240), (1262, 22360), (1720, 16406), (2236, 12620), (2524, 11180), (2795, 10096), (3155, 8944), (3440, 8203), (4472, 6310), (5048, 5590)]