2080491980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1367}}^1\times {\mathrm{1553}}^1$

素因数の和:2943

約数の個数: 72

約数和(自身を含む): 5089337568

約数和(自身を除く): 3008845588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1367, 1553, 2734, 3106, 5468, 6212, 6835, 7765, 9569, 10871, 13670, 15530, 19138, 21742, 27340, 31060, 38276, 43484, 47845, 54355, 66983, 76097, 95690, 108710, 133966, 152194, 191380, 217420, 267932, 304388, 334915, 380485, 669830, 760970, 1339660, 1521940, 2122951, 4245902, 8491804, 10614755, 14860657, 21229510, 29721314, 42459020, 59442628, 74303285, 104024599, 148606570, 208049198, 297213140, 416098396, 520122995, 1040245990, 2080491980]

約数ペア:

[(1, 2080491980), (2, 1040245990), (4, 520122995), (5, 416098396), (7, 297213140), (10, 208049198), (14, 148606570), (20, 104024599), (28, 74303285), (35, 59442628), (49, 42459020), (70, 29721314), (98, 21229510), (140, 14860657), (196, 10614755), (245, 8491804), (490, 4245902), (980, 2122951), (1367, 1521940), (1553, 1339660), (2734, 760970), (3106, 669830), (5468, 380485), (6212, 334915), (6835, 304388), (7765, 267932), (9569, 217420), (10871, 191380), (13670, 152194), (15530, 133966), (19138, 108710), (21742, 95690), (27340, 76097), (31060, 66983), (38276, 54355), (43484, 47845)]