280667988

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{419}}^1\times {\mathrm{809}}^1$

素因数の和:1261

約数の個数: 72

約数和(自身を含む): 742996800

約数和(自身を除く): 462328812

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 138, 207, 276, 414, 419, 809, 828, 838, 1257, 1618, 1676, 2427, 2514, 3236, 3771, 4854, 5028, 7281, 7542, 9637, 9708, 14562, 15084, 18607, 19274, 28911, 29124, 37214, 38548, 55821, 57822, 74428, 86733, 111642, 115644, 167463, 173466, 223284, 334926, 338971, 346932, 669852, 677942, 1016913, 1355884, 2033826, 3050739, 4067652, 6101478, 7796333, 12202956, 15592666, 23388999, 31185332, 46777998, 70166997, 93555996, 140333994, 280667988]

約数ペア:

[(1, 280667988), (2, 140333994), (3, 93555996), (4, 70166997), (6, 46777998), (9, 31185332), (12, 23388999), (18, 15592666), (23, 12202956), (36, 7796333), (46, 6101478), (69, 4067652), (92, 3050739), (138, 2033826), (207, 1355884), (276, 1016913), (414, 677942), (419, 669852), (809, 346932), (828, 338971), (838, 334926), (1257, 223284), (1618, 173466), (1676, 167463), (2427, 115644), (2514, 111642), (3236, 86733), (3771, 74428), (4854, 57822), (5028, 55821), (7281, 38548), (7542, 37214), (9637, 29124), (9708, 28911), (14562, 19274), (15084, 18607)]