28293720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2591}}^1$

素因数の和:2625

約数の個数: 128

約数和(自身を含む): 104509440

約数和(自身を除く): 76215720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2591, 2730, 3640, 5182, 5460, 7773, 10364, 10920, 12955, 15546, 18137, 20728, 25910, 31092, 33683, 36274, 38865, 51820, 54411, 62184, 67366, 72548, 77730, 90685, 101049, 103640, 108822, 134732, 145096, 155460, 168415, 181370, 202098, 217644, 235781, 269464, 272055, 310920, 336830, 362740, 404196, 435288, 471562, 505245, 544110, 673660, 707343, 725480, 808392, 943124, 1010490, 1088220, 1178905, 1347320, 1414686, 1886248, 2020980, 2176440, 2357810, 2829372, 3536715, 4041960, 4715620, 5658744, 7073430, 9431240, 14146860, 28293720]

約数ペア:

[(1, 28293720), (2, 14146860), (3, 9431240), (4, 7073430), (5, 5658744), (6, 4715620), (7, 4041960), (8, 3536715), (10, 2829372), (12, 2357810), (13, 2176440), (14, 2020980), (15, 1886248), (20, 1414686), (21, 1347320), (24, 1178905), (26, 1088220), (28, 1010490), (30, 943124), (35, 808392), (39, 725480), (40, 707343), (42, 673660), (52, 544110), (56, 505245), (60, 471562), (65, 435288), (70, 404196), (78, 362740), (84, 336830), (91, 310920), (104, 272055), (105, 269464), (120, 235781), (130, 217644), (140, 202098), (156, 181370), (168, 168415), (182, 155460), (195, 145096), (210, 134732), (260, 108822), (273, 103640), (280, 101049), (312, 90685), (364, 77730), (390, 72548), (420, 67366), (455, 62184), (520, 54411), (546, 51820), (728, 38865), (780, 36274), (840, 33683), (910, 31092), (1092, 25910), (1365, 20728), (1560, 18137), (1820, 15546), (2184, 12955), (2591, 10920), (2730, 10364), (3640, 7773), (5182, 5460)]