21230040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 70963200

約数和(自身を除く): 49733160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 31, 39, 40, 52, 60, 62, 65, 78, 93, 104, 120, 124, 130, 155, 156, 186, 195, 248, 260, 310, 312, 372, 390, 403, 439, 465, 520, 620, 744, 780, 806, 878, 930, 1209, 1240, 1317, 1560, 1612, 1756, 1860, 2015, 2195, 2418, 2634, 3224, 3512, 3720, 4030, 4390, 4836, 5268, 5707, 6045, 6585, 8060, 8780, 9672, 10536, 11414, 12090, 13170, 13609, 16120, 17121, 17560, 22828, 24180, 26340, 27218, 28535, 34242, 40827, 45656, 48360, 52680, 54436, 57070, 68045, 68484, 81654, 85605, 108872, 114140, 136090, 136968, 163308, 171210, 176917, 204135, 228280, 272180, 326616, 342420, 353834, 408270, 530751, 544360, 684840, 707668, 816540, 884585, 1061502, 1415336, 1633080, 1769170, 2123004, 2653755, 3538340, 4246008, 5307510, 7076680, 10615020, 21230040]

約数ペア:

[(1, 21230040), (2, 10615020), (3, 7076680), (4, 5307510), (5, 4246008), (6, 3538340), (8, 2653755), (10, 2123004), (12, 1769170), (13, 1633080), (15, 1415336), (20, 1061502), (24, 884585), (26, 816540), (30, 707668), (31, 684840), (39, 544360), (40, 530751), (52, 408270), (60, 353834), (62, 342420), (65, 326616), (78, 272180), (93, 228280), (104, 204135), (120, 176917), (124, 171210), (130, 163308), (155, 136968), (156, 136090), (186, 114140), (195, 108872), (248, 85605), (260, 81654), (310, 68484), (312, 68045), (372, 57070), (390, 54436), (403, 52680), (439, 48360), (465, 45656), (520, 40827), (620, 34242), (744, 28535), (780, 27218), (806, 26340), (878, 24180), (930, 22828), (1209, 17560), (1240, 17121), (1317, 16120), (1560, 13609), (1612, 13170), (1756, 12090), (1860, 11414), (2015, 10536), (2195, 9672), (2418, 8780), (2634, 8060), (3224, 6585), (3512, 6045), (3720, 5707), (4030, 5268), (4390, 4836)]