78740940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 247564800

約数和(自身を除く): 168823860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 19, 20, 30, 34, 38, 51, 57, 60, 68, 76, 85, 95, 102, 114, 170, 190, 204, 228, 239, 255, 285, 289, 323, 340, 380, 478, 510, 570, 578, 646, 717, 867, 956, 969, 1020, 1140, 1156, 1195, 1292, 1434, 1445, 1615, 1734, 1938, 2390, 2868, 2890, 3230, 3468, 3585, 3876, 4063, 4335, 4541, 4780, 4845, 5491, 5780, 6460, 7170, 8126, 8670, 9082, 9690, 10982, 12189, 13623, 14340, 16252, 16473, 17340, 18164, 19380, 20315, 21964, 22705, 24378, 27246, 27455, 32946, 40630, 45410, 48756, 54492, 54910, 60945, 65892, 68115, 69071, 77197, 81260, 82365, 90820, 109820, 121890, 136230, 138142, 154394, 164730, 207213, 231591, 243780, 272460, 276284, 308788, 329460, 345355, 385985, 414426, 463182, 690710, 771970, 828852, 926364, 1036065, 1157955, 1312349, 1381420, 1543940, 2072130, 2315910, 2624698, 3937047, 4144260, 4631820, 5249396, 6561745, 7874094, 13123490, 15748188, 19685235, 26246980, 39370470, 78740940]

約数ペア:

[(1, 78740940), (2, 39370470), (3, 26246980), (4, 19685235), (5, 15748188), (6, 13123490), (10, 7874094), (12, 6561745), (15, 5249396), (17, 4631820), (19, 4144260), (20, 3937047), (30, 2624698), (34, 2315910), (38, 2072130), (51, 1543940), (57, 1381420), (60, 1312349), (68, 1157955), (76, 1036065), (85, 926364), (95, 828852), (102, 771970), (114, 690710), (170, 463182), (190, 414426), (204, 385985), (228, 345355), (239, 329460), (255, 308788), (285, 276284), (289, 272460), (323, 243780), (340, 231591), (380, 207213), (478, 164730), (510, 154394), (570, 138142), (578, 136230), (646, 121890), (717, 109820), (867, 90820), (956, 82365), (969, 81260), (1020, 77197), (1140, 69071), (1156, 68115), (1195, 65892), (1292, 60945), (1434, 54910), (1445, 54492), (1615, 48756), (1734, 45410), (1938, 40630), (2390, 32946), (2868, 27455), (2890, 27246), (3230, 24378), (3468, 22705), (3585, 21964), (3876, 20315), (4063, 19380), (4335, 18164), (4541, 17340), (4780, 16473), (4845, 16252), (5491, 14340), (5780, 13623), (6460, 12189), (7170, 10982), (8126, 9690), (8670, 9082)]