28306720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:498

約数の個数: 96

約数和(自身を含む): 74511360

約数和(自身を除く): 46204640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 403, 416, 439, 496, 520, 620, 806, 878, 992, 1040, 1240, 1612, 1756, 2015, 2080, 2195, 2480, 3224, 3512, 4030, 4390, 4960, 5707, 6448, 7024, 8060, 8780, 11414, 12896, 13609, 14048, 16120, 17560, 22828, 27218, 28535, 32240, 35120, 45656, 54436, 57070, 64480, 68045, 70240, 91312, 108872, 114140, 136090, 176917, 182624, 217744, 228280, 272180, 353834, 435488, 456560, 544360, 707668, 884585, 913120, 1088720, 1415336, 1769170, 2177440, 2830672, 3538340, 5661344, 7076680, 14153360, 28306720]

約数ペア:

[(1, 28306720), (2, 14153360), (4, 7076680), (5, 5661344), (8, 3538340), (10, 2830672), (13, 2177440), (16, 1769170), (20, 1415336), (26, 1088720), (31, 913120), (32, 884585), (40, 707668), (52, 544360), (62, 456560), (65, 435488), (80, 353834), (104, 272180), (124, 228280), (130, 217744), (155, 182624), (160, 176917), (208, 136090), (248, 114140), (260, 108872), (310, 91312), (403, 70240), (416, 68045), (439, 64480), (496, 57070), (520, 54436), (620, 45656), (806, 35120), (878, 32240), (992, 28535), (1040, 27218), (1240, 22828), (1612, 17560), (1756, 16120), (2015, 14048), (2080, 13609), (2195, 12896), (2480, 11414), (3224, 8780), (3512, 8060), (4030, 7024), (4390, 6448), (4960, 5707)]