28343920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1039}}^1$

素因数の和:1094

約数の個数: 80

約数和(自身を含む): 74280960

約数和(自身を除く): 45937040

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1039, 1240, 1364, 1705, 2078, 2480, 2728, 3410, 4156, 5195, 5456, 6820, 8312, 10390, 11429, 13640, 16624, 20780, 22858, 27280, 32209, 41560, 45716, 57145, 64418, 83120, 91432, 114290, 128836, 161045, 182864, 228580, 257672, 322090, 354299, 457160, 515344, 644180, 708598, 914320, 1288360, 1417196, 1771495, 2576720, 2834392, 3542990, 5668784, 7085980, 14171960, 28343920]

約数ペア:

[(1, 28343920), (2, 14171960), (4, 7085980), (5, 5668784), (8, 3542990), (10, 2834392), (11, 2576720), (16, 1771495), (20, 1417196), (22, 1288360), (31, 914320), (40, 708598), (44, 644180), (55, 515344), (62, 457160), (80, 354299), (88, 322090), (110, 257672), (124, 228580), (155, 182864), (176, 161045), (220, 128836), (248, 114290), (310, 91432), (341, 83120), (440, 64418), (496, 57145), (620, 45716), (682, 41560), (880, 32209), (1039, 27280), (1240, 22858), (1364, 20780), (1705, 16624), (2078, 13640), (2480, 11429), (2728, 10390), (3410, 8312), (4156, 6820), (5195, 5456)]