249739520

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:560

約数の個数: 144

約数和(自身を含む): 662256000

約数和(自身を除く): 412516480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 32, 34, 40, 46, 64, 68, 80, 85, 92, 115, 128, 136, 160, 170, 184, 230, 256, 272, 320, 340, 368, 391, 460, 499, 544, 640, 680, 736, 782, 920, 998, 1088, 1280, 1360, 1472, 1564, 1840, 1955, 1996, 2176, 2495, 2720, 2944, 3128, 3680, 3910, 3992, 4352, 4990, 5440, 5888, 6256, 7360, 7820, 7984, 8483, 9980, 10880, 11477, 12512, 14720, 15640, 15968, 16966, 19960, 21760, 22954, 25024, 29440, 31280, 31936, 33932, 39920, 42415, 45908, 50048, 57385, 62560, 63872, 67864, 79840, 84830, 91816, 100096, 114770, 125120, 127744, 135728, 159680, 169660, 183632, 195109, 229540, 250240, 271456, 319360, 339320, 367264, 390218, 459080, 500480, 542912, 638720, 678640, 734528, 780436, 918160, 975545, 1085824, 1357280, 1469056, 1560872, 1836320, 1951090, 2171648, 2714560, 2938112, 3121744, 3672640, 3902180, 5429120, 6243488, 7345280, 7804360, 10858240, 12486976, 14690560, 15608720, 24973952, 31217440, 49947904, 62434880, 124869760, 249739520]

約数ペア:

[(1, 249739520), (2, 124869760), (4, 62434880), (5, 49947904), (8, 31217440), (10, 24973952), (16, 15608720), (17, 14690560), (20, 12486976), (23, 10858240), (32, 7804360), (34, 7345280), (40, 6243488), (46, 5429120), (64, 3902180), (68, 3672640), (80, 3121744), (85, 2938112), (92, 2714560), (115, 2171648), (128, 1951090), (136, 1836320), (160, 1560872), (170, 1469056), (184, 1357280), (230, 1085824), (256, 975545), (272, 918160), (320, 780436), (340, 734528), (368, 678640), (391, 638720), (460, 542912), (499, 500480), (544, 459080), (640, 390218), (680, 367264), (736, 339320), (782, 319360), (920, 271456), (998, 250240), (1088, 229540), (1280, 195109), (1360, 183632), (1472, 169660), (1564, 159680), (1840, 135728), (1955, 127744), (1996, 125120), (2176, 114770), (2495, 100096), (2720, 91816), (2944, 84830), (3128, 79840), (3680, 67864), (3910, 63872), (3992, 62560), (4352, 57385), (4990, 50048), (5440, 45908), (5888, 42415), (6256, 39920), (7360, 33932), (7820, 31936), (7984, 31280), (8483, 29440), (9980, 25024), (10880, 22954), (11477, 21760), (12512, 19960), (14720, 16966), (15640, 15968)]