21430668775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1\times {\mathrm{631}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 28417020480

約数和(自身を除く): 6986351705

約数列:

[1, 5, 17, 25, 85, 157, 425, 509, 631, 785, 2545, 2669, 3155, 3925, 8653, 10727, 12725, 13345, 15775, 43265, 53635, 66725, 79913, 99067, 216325, 268175, 321179, 399565, 495335, 1358521, 1605895, 1684139, 1997825, 2476675, 5460043, 6792605, 8029475, 8420695, 27300215, 33963025, 42103475, 50425103, 136501075, 252125515, 857226751, 1260627575, 4286133755, 21430668775]

約数ペア:

[(1, 21430668775), (5, 4286133755), (17, 1260627575), (25, 857226751), (85, 252125515), (157, 136501075), (425, 50425103), (509, 42103475), (631, 33963025), (785, 27300215), (2545, 8420695), (2669, 8029475), (3155, 6792605), (3925, 5460043), (8653, 2476675), (10727, 1997825), (12725, 1684139), (13345, 1605895), (15775, 1358521), (43265, 495335), (53635, 399565), (66725, 321179), (79913, 268175), (99067, 216325)]