820167720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{402043}}^1$

素因数の和:402074

約数の個数: 64

約数和(自身を含む): 2605245120

約数和(自身を除く): 1785077400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 402043, 804086, 1206129, 1608172, 2010215, 2412258, 3216344, 4020430, 4824516, 6030645, 6834731, 8040860, 9649032, 12061290, 13669462, 16081720, 20504193, 24122580, 27338924, 34173655, 41008386, 48245160, 54677848, 68347310, 82016772, 102520965, 136694620, 164033544, 205041930, 273389240, 410083860, 820167720]

約数ペア:

[(1, 820167720), (2, 410083860), (3, 273389240), (4, 205041930), (5, 164033544), (6, 136694620), (8, 102520965), (10, 82016772), (12, 68347310), (15, 54677848), (17, 48245160), (20, 41008386), (24, 34173655), (30, 27338924), (34, 24122580), (40, 20504193), (51, 16081720), (60, 13669462), (68, 12061290), (85, 9649032), (102, 8040860), (120, 6834731), (136, 6030645), (170, 4824516), (204, 4020430), (255, 3216344), (340, 2412258), (408, 2010215), (510, 1608172), (680, 1206129), (1020, 804086), (2040, 402043)]