28465320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 93623040

約数和(自身を除く): 65157720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 71, 78, 104, 120, 130, 142, 156, 195, 213, 257, 260, 284, 312, 355, 390, 426, 514, 520, 568, 710, 771, 780, 852, 923, 1028, 1065, 1285, 1420, 1542, 1560, 1704, 1846, 2056, 2130, 2570, 2769, 2840, 3084, 3341, 3692, 3855, 4260, 4615, 5140, 5538, 6168, 6682, 7384, 7710, 8520, 9230, 10023, 10280, 11076, 13364, 13845, 15420, 16705, 18247, 18460, 20046, 22152, 26728, 27690, 30840, 33410, 36494, 36920, 40092, 50115, 54741, 55380, 66820, 72988, 80184, 91235, 100230, 109482, 110760, 133640, 145976, 182470, 200460, 218964, 237211, 273705, 364940, 400920, 437928, 474422, 547410, 711633, 729880, 948844, 1094820, 1186055, 1423266, 1897688, 2189640, 2372110, 2846532, 3558165, 4744220, 5693064, 7116330, 9488440, 14232660, 28465320]

約数ペア:

[(1, 28465320), (2, 14232660), (3, 9488440), (4, 7116330), (5, 5693064), (6, 4744220), (8, 3558165), (10, 2846532), (12, 2372110), (13, 2189640), (15, 1897688), (20, 1423266), (24, 1186055), (26, 1094820), (30, 948844), (39, 729880), (40, 711633), (52, 547410), (60, 474422), (65, 437928), (71, 400920), (78, 364940), (104, 273705), (120, 237211), (130, 218964), (142, 200460), (156, 182470), (195, 145976), (213, 133640), (257, 110760), (260, 109482), (284, 100230), (312, 91235), (355, 80184), (390, 72988), (426, 66820), (514, 55380), (520, 54741), (568, 50115), (710, 40092), (771, 36920), (780, 36494), (852, 33410), (923, 30840), (1028, 27690), (1065, 26728), (1285, 22152), (1420, 20046), (1542, 18460), (1560, 18247), (1704, 16705), (1846, 15420), (2056, 13845), (2130, 13364), (2570, 11076), (2769, 10280), (2840, 10023), (3084, 9230), (3341, 8520), (3692, 7710), (3855, 7384), (4260, 6682), (4615, 6168), (5140, 5538)]