78904720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:153

約数の個数: 160

約数和(自身を含む): 210343680

約数和(自身を除く): 131438960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 37, 38, 40, 46, 61, 74, 76, 80, 92, 95, 115, 122, 148, 152, 184, 185, 190, 230, 244, 296, 304, 305, 368, 370, 380, 437, 460, 488, 592, 610, 703, 740, 760, 851, 874, 920, 976, 1159, 1220, 1403, 1406, 1480, 1520, 1702, 1748, 1840, 2185, 2257, 2318, 2440, 2806, 2812, 2960, 3404, 3496, 3515, 4255, 4370, 4514, 4636, 4880, 5612, 5624, 5795, 6808, 6992, 7015, 7030, 8510, 8740, 9028, 9272, 11224, 11248, 11285, 11590, 13616, 14030, 14060, 16169, 17020, 17480, 18056, 18544, 22448, 22570, 23180, 26657, 28060, 28120, 32338, 34040, 34960, 36112, 42883, 45140, 46360, 51911, 53314, 56120, 56240, 64676, 68080, 80845, 85766, 90280, 92720, 103822, 106628, 112240, 129352, 133285, 161690, 171532, 180560, 207644, 213256, 214415, 258704, 259555, 266570, 323380, 343064, 415288, 426512, 428830, 519110, 533140, 646760, 686128, 830576, 857660, 986309, 1038220, 1066280, 1293520, 1715320, 1972618, 2076440, 2132560, 3430640, 3945236, 4152880, 4931545, 7890472, 9863090, 15780944, 19726180, 39452360, 78904720]

約数ペア:

[(1, 78904720), (2, 39452360), (4, 19726180), (5, 15780944), (8, 9863090), (10, 7890472), (16, 4931545), (19, 4152880), (20, 3945236), (23, 3430640), (37, 2132560), (38, 2076440), (40, 1972618), (46, 1715320), (61, 1293520), (74, 1066280), (76, 1038220), (80, 986309), (92, 857660), (95, 830576), (115, 686128), (122, 646760), (148, 533140), (152, 519110), (184, 428830), (185, 426512), (190, 415288), (230, 343064), (244, 323380), (296, 266570), (304, 259555), (305, 258704), (368, 214415), (370, 213256), (380, 207644), (437, 180560), (460, 171532), (488, 161690), (592, 133285), (610, 129352), (703, 112240), (740, 106628), (760, 103822), (851, 92720), (874, 90280), (920, 85766), (976, 80845), (1159, 68080), (1220, 64676), (1403, 56240), (1406, 56120), (1480, 53314), (1520, 51911), (1702, 46360), (1748, 45140), (1840, 42883), (2185, 36112), (2257, 34960), (2318, 34040), (2440, 32338), (2806, 28120), (2812, 28060), (2960, 26657), (3404, 23180), (3496, 22570), (3515, 22448), (4255, 18544), (4370, 18056), (4514, 17480), (4636, 17020), (4880, 16169), (5612, 14060), (5624, 14030), (5795, 13616), (6808, 11590), (6992, 11285), (7015, 11248), (7030, 11224), (8510, 9272), (8740, 9028)]