81994380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3391}}^1$

素因数の和:3447

約数の個数: 96

約数和(自身を含む): 255295488

約数和(自身を除く): 173301108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 124, 130, 155, 156, 186, 195, 260, 310, 372, 390, 403, 465, 620, 780, 806, 930, 1209, 1612, 1860, 2015, 2418, 3391, 4030, 4836, 6045, 6782, 8060, 10173, 12090, 13564, 16955, 20346, 24180, 33910, 40692, 44083, 50865, 67820, 88166, 101730, 105121, 132249, 176332, 203460, 210242, 220415, 264498, 315363, 420484, 440830, 525605, 528996, 630726, 661245, 881660, 1051210, 1261452, 1322490, 1366573, 1576815, 2102420, 2644980, 2733146, 3153630, 4099719, 5466292, 6307260, 6832865, 8199438, 13665730, 16398876, 20498595, 27331460, 40997190, 81994380]

約数ペア:

[(1, 81994380), (2, 40997190), (3, 27331460), (4, 20498595), (5, 16398876), (6, 13665730), (10, 8199438), (12, 6832865), (13, 6307260), (15, 5466292), (20, 4099719), (26, 3153630), (30, 2733146), (31, 2644980), (39, 2102420), (52, 1576815), (60, 1366573), (62, 1322490), (65, 1261452), (78, 1051210), (93, 881660), (124, 661245), (130, 630726), (155, 528996), (156, 525605), (186, 440830), (195, 420484), (260, 315363), (310, 264498), (372, 220415), (390, 210242), (403, 203460), (465, 176332), (620, 132249), (780, 105121), (806, 101730), (930, 88166), (1209, 67820), (1612, 50865), (1860, 44083), (2015, 40692), (2418, 33910), (3391, 24180), (4030, 20346), (4836, 16955), (6045, 13564), (6782, 12090), (8060, 10173)]