28821320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2113}}^1$

素因数の和:2166

約数の個数: 64

約数和(自身を含む): 73059840

約数和(自身を除く): 44238520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2113, 2728, 3410, 4226, 6820, 8452, 10565, 13640, 16904, 21130, 23243, 42260, 46486, 65503, 84520, 92972, 116215, 131006, 185944, 232430, 262012, 327515, 464860, 524024, 655030, 720533, 929720, 1310060, 1441066, 2620120, 2882132, 3602665, 5764264, 7205330, 14410660, 28821320]

約数ペア:

[(1, 28821320), (2, 14410660), (4, 7205330), (5, 5764264), (8, 3602665), (10, 2882132), (11, 2620120), (20, 1441066), (22, 1310060), (31, 929720), (40, 720533), (44, 655030), (55, 524024), (62, 464860), (88, 327515), (110, 262012), (124, 232430), (155, 185944), (220, 131006), (248, 116215), (310, 92972), (341, 84520), (440, 65503), (620, 46486), (682, 42260), (1240, 23243), (1364, 21130), (1705, 16904), (2113, 13640), (2728, 10565), (3410, 8452), (4226, 6820)]