81796680

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{4637}}^1$

素因数の和:4668

約数の個数: 144

約数和(自身を含む): 309308220

約数和(自身を除く): 227511540

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1260, 1470, 1764, 1960, 2205, 2520, 2940, 3528, 4410, 4637, 5880, 8820, 9274, 13911, 17640, 18548, 23185, 27822, 32459, 37096, 41733, 46370, 55644, 64918, 69555, 83466, 92740, 97377, 111288, 129836, 139110, 162295, 166932, 185480, 194754, 208665, 227213, 259672, 278220, 292131, 324590, 333864, 389508, 417330, 454426, 486885, 556440, 584262, 649180, 681639, 779016, 834660, 908852, 973770, 1136065, 1168524, 1298360, 1363278, 1460655, 1669320, 1817704, 1947540, 2044917, 2272130, 2337048, 2726556, 2921310, 3408195, 3895080, 4089834, 4544260, 5453112, 5842620, 6816390, 8179668, 9088520, 10224585, 11685240, 13632780, 16359336, 20449170, 27265560, 40898340, 81796680]

約数ペア:

[(1, 81796680), (2, 40898340), (3, 27265560), (4, 20449170), (5, 16359336), (6, 13632780), (7, 11685240), (8, 10224585), (9, 9088520), (10, 8179668), (12, 6816390), (14, 5842620), (15, 5453112), (18, 4544260), (20, 4089834), (21, 3895080), (24, 3408195), (28, 2921310), (30, 2726556), (35, 2337048), (36, 2272130), (40, 2044917), (42, 1947540), (45, 1817704), (49, 1669320), (56, 1460655), (60, 1363278), (63, 1298360), (70, 1168524), (72, 1136065), (84, 973770), (90, 908852), (98, 834660), (105, 779016), (120, 681639), (126, 649180), (140, 584262), (147, 556440), (168, 486885), (180, 454426), (196, 417330), (210, 389508), (245, 333864), (252, 324590), (280, 292131), (294, 278220), (315, 259672), (360, 227213), (392, 208665), (420, 194754), (441, 185480), (490, 166932), (504, 162295), (588, 139110), (630, 129836), (735, 111288), (840, 97377), (882, 92740), (980, 83466), (1176, 69555), (1260, 64918), (1470, 55644), (1764, 46370), (1960, 41733), (2205, 37096), (2520, 32459), (2940, 27822), (3528, 23185), (4410, 18548), (4637, 17640), (5880, 13911), (8820, 9274)]