251809280

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 160

約数和(自身を含む): 659957760

約数和(自身を除く): 408148480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 64, 76, 80, 95, 124, 128, 152, 155, 160, 167, 190, 248, 256, 304, 310, 320, 334, 380, 496, 512, 589, 608, 620, 640, 668, 760, 835, 992, 1178, 1216, 1240, 1280, 1336, 1520, 1670, 1984, 2356, 2432, 2480, 2560, 2672, 2945, 3040, 3173, 3340, 3968, 4712, 4864, 4960, 5177, 5344, 5890, 6080, 6346, 6680, 7936, 9424, 9728, 9920, 10354, 10688, 11780, 12160, 12692, 13360, 15865, 15872, 18848, 19840, 20708, 21376, 23560, 24320, 25384, 25885, 26720, 31730, 37696, 39680, 41416, 42752, 47120, 48640, 50768, 51770, 53440, 63460, 75392, 79360, 82832, 85504, 94240, 98363, 101536, 103540, 106880, 126920, 150784, 165664, 188480, 196726, 203072, 207080, 213760, 253840, 301568, 331328, 376960, 393452, 406144, 414160, 427520, 491815, 507680, 662656, 753920, 786904, 812288, 828320, 983630, 1015360, 1325312, 1507840, 1573808, 1624576, 1656640, 1967260, 2030720, 2650624, 3147616, 3313280, 3934520, 4061440, 6295232, 6626560, 7869040, 8122880, 12590464, 13253120, 15738080, 25180928, 31476160, 50361856, 62952320, 125904640, 251809280]

約数ペア:

[(1, 251809280), (2, 125904640), (4, 62952320), (5, 50361856), (8, 31476160), (10, 25180928), (16, 15738080), (19, 13253120), (20, 12590464), (31, 8122880), (32, 7869040), (38, 6626560), (40, 6295232), (62, 4061440), (64, 3934520), (76, 3313280), (80, 3147616), (95, 2650624), (124, 2030720), (128, 1967260), (152, 1656640), (155, 1624576), (160, 1573808), (167, 1507840), (190, 1325312), (248, 1015360), (256, 983630), (304, 828320), (310, 812288), (320, 786904), (334, 753920), (380, 662656), (496, 507680), (512, 491815), (589, 427520), (608, 414160), (620, 406144), (640, 393452), (668, 376960), (760, 331328), (835, 301568), (992, 253840), (1178, 213760), (1216, 207080), (1240, 203072), (1280, 196726), (1336, 188480), (1520, 165664), (1670, 150784), (1984, 126920), (2356, 106880), (2432, 103540), (2480, 101536), (2560, 98363), (2672, 94240), (2945, 85504), (3040, 82832), (3173, 79360), (3340, 75392), (3968, 63460), (4712, 53440), (4864, 51770), (4960, 50768), (5177, 48640), (5344, 47120), (5890, 42752), (6080, 41416), (6346, 39680), (6680, 37696), (7936, 31730), (9424, 26720), (9728, 25885), (9920, 25384), (10354, 24320), (10688, 23560), (11780, 21376), (12160, 20708), (12692, 19840), (13360, 18848), (15865, 15872)]