81667660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{599}}^1$

素因数の和:1026

約数の個数: 48

約数和(自身を含む): 182347200

約数和(自身を除く): 100679540

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 401, 599, 802, 1198, 1604, 2005, 2396, 2995, 4010, 5990, 6817, 8020, 10183, 11980, 13634, 20366, 27268, 34085, 40732, 50915, 68170, 101830, 136340, 203660, 240199, 480398, 960796, 1200995, 2401990, 4083383, 4803980, 8166766, 16333532, 20416915, 40833830, 81667660]

約数ペア:

[(1, 81667660), (2, 40833830), (4, 20416915), (5, 16333532), (10, 8166766), (17, 4803980), (20, 4083383), (34, 2401990), (68, 1200995), (85, 960796), (170, 480398), (340, 240199), (401, 203660), (599, 136340), (802, 101830), (1198, 68170), (1604, 50915), (2005, 40732), (2396, 34085), (2995, 27268), (4010, 20366), (5990, 13634), (6817, 11980), (8020, 10183)]