19778620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 47738880

約数和(自身を除く): 27960260

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 31, 38, 46, 62, 73, 76, 92, 95, 115, 124, 146, 155, 190, 230, 292, 310, 365, 380, 437, 460, 589, 620, 713, 730, 874, 1178, 1387, 1426, 1460, 1679, 1748, 2185, 2263, 2356, 2774, 2852, 2945, 3358, 3565, 4370, 4526, 5548, 5890, 6716, 6935, 7130, 8395, 8740, 9052, 11315, 11780, 13547, 13870, 14260, 16790, 22630, 27094, 27740, 31901, 33580, 42997, 45260, 52049, 54188, 63802, 67735, 85994, 104098, 127604, 135470, 159505, 171988, 208196, 214985, 260245, 270940, 319010, 429970, 520490, 638020, 859940, 988931, 1040980, 1977862, 3955724, 4944655, 9889310, 19778620]

約数ペア:

[(1, 19778620), (2, 9889310), (4, 4944655), (5, 3955724), (10, 1977862), (19, 1040980), (20, 988931), (23, 859940), (31, 638020), (38, 520490), (46, 429970), (62, 319010), (73, 270940), (76, 260245), (92, 214985), (95, 208196), (115, 171988), (124, 159505), (146, 135470), (155, 127604), (190, 104098), (230, 85994), (292, 67735), (310, 63802), (365, 54188), (380, 52049), (437, 45260), (460, 42997), (589, 33580), (620, 31901), (713, 27740), (730, 27094), (874, 22630), (1178, 16790), (1387, 14260), (1426, 13870), (1460, 13547), (1679, 11780), (1748, 11315), (2185, 9052), (2263, 8740), (2356, 8395), (2774, 7130), (2852, 6935), (2945, 6716), (3358, 5890), (3565, 5548), (4370, 4526)]