640196760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{108877}}^1$

素因数の和:108905

約数の個数: 96

約数和(自身を含む): 2234176560

約数和(自身を除く): 1593979800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 108877, 217754, 326631, 435508, 544385, 653262, 762139, 871016, 1088770, 1306524, 1524278, 1633155, 2177540, 2286417, 2613048, 3048556, 3266310, 3810695, 4355080, 4572834, 5334973, 6097112, 6532620, 7621390, 9145668, 10669946, 11432085, 13065240, 15242780, 16004919, 18291336, 21339892, 22864170, 26674865, 30485560, 32009838, 42679784, 45728340, 53349730, 64019676, 80024595, 91456680, 106699460, 128039352, 160049190, 213398920, 320098380, 640196760]

約数ペア:

[(1, 640196760), (2, 320098380), (3, 213398920), (4, 160049190), (5, 128039352), (6, 106699460), (7, 91456680), (8, 80024595), (10, 64019676), (12, 53349730), (14, 45728340), (15, 42679784), (20, 32009838), (21, 30485560), (24, 26674865), (28, 22864170), (30, 21339892), (35, 18291336), (40, 16004919), (42, 15242780), (49, 13065240), (56, 11432085), (60, 10669946), (70, 9145668), (84, 7621390), (98, 6532620), (105, 6097112), (120, 5334973), (140, 4572834), (147, 4355080), (168, 3810695), (196, 3266310), (210, 3048556), (245, 2613048), (280, 2286417), (294, 2177540), (392, 1633155), (420, 1524278), (490, 1306524), (588, 1088770), (735, 871016), (840, 762139), (980, 653262), (1176, 544385), (1470, 435508), (1960, 326631), (2940, 217754), (5880, 108877)]