78644800

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:253

約数の個数: 168

約数和(自身を含む): 220472000

約数和(自身を除く): 141827200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 64, 65, 76, 80, 95, 100, 104, 130, 152, 160, 190, 199, 200, 208, 247, 260, 304, 320, 325, 380, 398, 400, 416, 475, 494, 520, 608, 650, 760, 796, 800, 832, 950, 988, 995, 1040, 1216, 1235, 1300, 1520, 1592, 1600, 1900, 1976, 1990, 2080, 2470, 2587, 2600, 3040, 3184, 3781, 3800, 3952, 3980, 4160, 4940, 4975, 5174, 5200, 6080, 6175, 6368, 7562, 7600, 7904, 7960, 9880, 9950, 10348, 10400, 12350, 12736, 12935, 15124, 15200, 15808, 15920, 18905, 19760, 19900, 20696, 20800, 24700, 25870, 30248, 30400, 31840, 37810, 39520, 39800, 41392, 49153, 49400, 51740, 60496, 63680, 64675, 75620, 79040, 79600, 82784, 94525, 98306, 98800, 103480, 120992, 129350, 151240, 159200, 165568, 189050, 196612, 197600, 206960, 241984, 245765, 258700, 302480, 318400, 378100, 393224, 395200, 413920, 491530, 517400, 604960, 756200, 786448, 827840, 983060, 1034800, 1209920, 1228825, 1512400, 1572896, 1966120, 2069600, 2457650, 3024800, 3145792, 3932240, 4139200, 4915300, 6049600, 7864480, 9830600, 15728960, 19661200, 39322400, 78644800]

約数ペア:

[(1, 78644800), (2, 39322400), (4, 19661200), (5, 15728960), (8, 9830600), (10, 7864480), (13, 6049600), (16, 4915300), (19, 4139200), (20, 3932240), (25, 3145792), (26, 3024800), (32, 2457650), (38, 2069600), (40, 1966120), (50, 1572896), (52, 1512400), (64, 1228825), (65, 1209920), (76, 1034800), (80, 983060), (95, 827840), (100, 786448), (104, 756200), (130, 604960), (152, 517400), (160, 491530), (190, 413920), (199, 395200), (200, 393224), (208, 378100), (247, 318400), (260, 302480), (304, 258700), (320, 245765), (325, 241984), (380, 206960), (398, 197600), (400, 196612), (416, 189050), (475, 165568), (494, 159200), (520, 151240), (608, 129350), (650, 120992), (760, 103480), (796, 98800), (800, 98306), (832, 94525), (950, 82784), (988, 79600), (995, 79040), (1040, 75620), (1216, 64675), (1235, 63680), (1300, 60496), (1520, 51740), (1592, 49400), (1600, 49153), (1900, 41392), (1976, 39800), (1990, 39520), (2080, 37810), (2470, 31840), (2587, 30400), (2600, 30248), (3040, 25870), (3184, 24700), (3781, 20800), (3800, 20696), (3952, 19900), (3980, 19760), (4160, 18905), (4940, 15920), (4975, 15808), (5174, 15200), (5200, 15124), (6080, 12935), (6175, 12736), (6368, 12350), (7562, 10400), (7600, 10348), (7904, 9950), (7960, 9880)]