81994310

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 167961600

約数和(自身を除く): 85967290

約数列:

[1, 2, 5, 10, 19, 23, 29, 38, 46, 58, 95, 115, 145, 190, 230, 290, 437, 551, 647, 667, 874, 1102, 1294, 1334, 2185, 2755, 3235, 3335, 4370, 5510, 6470, 6670, 12293, 12673, 14881, 18763, 24586, 25346, 29762, 37526, 61465, 63365, 74405, 93815, 122930, 126730, 148810, 187630, 282739, 356497, 431549, 565478, 712994, 863098, 1413695, 1782485, 2157745, 2827390, 3564970, 4315490, 8199431, 16398862, 40997155, 81994310]

約数ペア:

[(1, 81994310), (2, 40997155), (5, 16398862), (10, 8199431), (19, 4315490), (23, 3564970), (29, 2827390), (38, 2157745), (46, 1782485), (58, 1413695), (95, 863098), (115, 712994), (145, 565478), (190, 431549), (230, 356497), (290, 282739), (437, 187630), (551, 148810), (647, 126730), (667, 122930), (874, 93815), (1102, 74405), (1294, 63365), (1334, 61465), (2185, 37526), (2755, 29762), (3235, 25346), (3335, 24586), (4370, 18763), (5510, 14881), (6470, 12673), (6670, 12293)]