20555790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^3$

素因数の和:126

約数の個数: 64

約数和(自身を含む): 53194752

約数和(自身を除く): 32638962

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 31, 46, 62, 69, 93, 115, 138, 155, 186, 230, 310, 345, 465, 690, 713, 930, 961, 1426, 1922, 2139, 2883, 3565, 4278, 4805, 5766, 7130, 9610, 10695, 14415, 21390, 22103, 28830, 29791, 44206, 59582, 66309, 89373, 110515, 132618, 148955, 178746, 221030, 297910, 331545, 446865, 663090, 685193, 893730, 1370386, 2055579, 3425965, 4111158, 6851930, 10277895, 20555790]

約数ペア:

[(1, 20555790), (2, 10277895), (3, 6851930), (5, 4111158), (6, 3425965), (10, 2055579), (15, 1370386), (23, 893730), (30, 685193), (31, 663090), (46, 446865), (62, 331545), (69, 297910), (93, 221030), (115, 178746), (138, 148955), (155, 132618), (186, 110515), (230, 89373), (310, 66309), (345, 59582), (465, 44206), (690, 29791), (713, 28830), (930, 22103), (961, 21390), (1426, 14415), (1922, 10695), (2139, 9610), (2883, 7130), (3565, 5766), (4278, 4805)]