20657772

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:503

約数の個数: 72

約数和(自身を含む): 55517280

約数和(自身を除く): 34859508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 61, 69, 92, 122, 138, 183, 207, 244, 276, 366, 409, 414, 549, 732, 818, 828, 1098, 1227, 1403, 1636, 2196, 2454, 2806, 3681, 4209, 4908, 5612, 7362, 8418, 9407, 12627, 14724, 16836, 18814, 24949, 25254, 28221, 37628, 49898, 50508, 56442, 74847, 84663, 99796, 112884, 149694, 169326, 224541, 299388, 338652, 449082, 573827, 898164, 1147654, 1721481, 2295308, 3442962, 5164443, 6885924, 10328886, 20657772]

約数ペア:

[(1, 20657772), (2, 10328886), (3, 6885924), (4, 5164443), (6, 3442962), (9, 2295308), (12, 1721481), (18, 1147654), (23, 898164), (36, 573827), (46, 449082), (61, 338652), (69, 299388), (92, 224541), (122, 169326), (138, 149694), (183, 112884), (207, 99796), (244, 84663), (276, 74847), (366, 56442), (409, 50508), (414, 49898), (549, 37628), (732, 28221), (818, 25254), (828, 24949), (1098, 18814), (1227, 16836), (1403, 14724), (1636, 12627), (2196, 9407), (2454, 8418), (2806, 7362), (3681, 5612), (4209, 4908)]