258147760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{619}}^1$

素因数の和:1046

約数の個数: 80

約数和(自身を含む): 649020960

約数和(自身を除く): 390873200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 401, 520, 619, 802, 1040, 1238, 1604, 2005, 2476, 3095, 3208, 4010, 4952, 5213, 6190, 6416, 8020, 8047, 9904, 10426, 12380, 16040, 16094, 20852, 24760, 26065, 32080, 32188, 40235, 41704, 49520, 52130, 64376, 80470, 83408, 104260, 128752, 160940, 208520, 248219, 321880, 417040, 496438, 643760, 992876, 1241095, 1985752, 2482190, 3226847, 3971504, 4964380, 6453694, 9928760, 12907388, 16134235, 19857520, 25814776, 32268470, 51629552, 64536940, 129073880, 258147760]

約数ペア:

[(1, 258147760), (2, 129073880), (4, 64536940), (5, 51629552), (8, 32268470), (10, 25814776), (13, 19857520), (16, 16134235), (20, 12907388), (26, 9928760), (40, 6453694), (52, 4964380), (65, 3971504), (80, 3226847), (104, 2482190), (130, 1985752), (208, 1241095), (260, 992876), (401, 643760), (520, 496438), (619, 417040), (802, 321880), (1040, 248219), (1238, 208520), (1604, 160940), (2005, 128752), (2476, 104260), (3095, 83408), (3208, 80470), (4010, 64376), (4952, 52130), (5213, 49520), (6190, 41704), (6416, 40235), (8020, 32188), (8047, 32080), (9904, 26065), (10426, 24760), (12380, 20852), (16040, 16094)]