25219840

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:118

約数の個数: 144

約数和(自身を含む): 68433120

約数和(自身を除く): 43213280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 61, 64, 68, 76, 80, 85, 95, 122, 128, 136, 152, 160, 170, 190, 244, 256, 272, 304, 305, 320, 323, 340, 380, 488, 544, 608, 610, 640, 646, 680, 760, 976, 1037, 1088, 1159, 1216, 1220, 1280, 1292, 1360, 1520, 1615, 1952, 2074, 2176, 2318, 2432, 2440, 2584, 2720, 3040, 3230, 3904, 4148, 4352, 4636, 4864, 4880, 5168, 5185, 5440, 5795, 6080, 6460, 7808, 8296, 9272, 9760, 10336, 10370, 10880, 11590, 12160, 12920, 15616, 16592, 18544, 19520, 19703, 20672, 20740, 21760, 23180, 24320, 25840, 33184, 37088, 39040, 39406, 41344, 41480, 46360, 51680, 66368, 74176, 78080, 78812, 82688, 82960, 92720, 98515, 103360, 132736, 148352, 157624, 165920, 185440, 197030, 206720, 265472, 296704, 315248, 331840, 370880, 394060, 413440, 630496, 663680, 741760, 788120, 1260992, 1327360, 1483520, 1576240, 2521984, 3152480, 5043968, 6304960, 12609920, 25219840]

約数ペア:

[(1, 25219840), (2, 12609920), (4, 6304960), (5, 5043968), (8, 3152480), (10, 2521984), (16, 1576240), (17, 1483520), (19, 1327360), (20, 1260992), (32, 788120), (34, 741760), (38, 663680), (40, 630496), (61, 413440), (64, 394060), (68, 370880), (76, 331840), (80, 315248), (85, 296704), (95, 265472), (122, 206720), (128, 197030), (136, 185440), (152, 165920), (160, 157624), (170, 148352), (190, 132736), (244, 103360), (256, 98515), (272, 92720), (304, 82960), (305, 82688), (320, 78812), (323, 78080), (340, 74176), (380, 66368), (488, 51680), (544, 46360), (608, 41480), (610, 41344), (640, 39406), (646, 39040), (680, 37088), (760, 33184), (976, 25840), (1037, 24320), (1088, 23180), (1159, 21760), (1216, 20740), (1220, 20672), (1280, 19703), (1292, 19520), (1360, 18544), (1520, 16592), (1615, 15616), (1952, 12920), (2074, 12160), (2176, 11590), (2318, 10880), (2432, 10370), (2440, 10336), (2584, 9760), (2720, 9272), (3040, 8296), (3230, 7808), (3904, 6460), (4148, 6080), (4352, 5795), (4636, 5440), (4864, 5185), (4880, 5168)]