208376420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^3\times {\mathrm{31}}^1$

素因数の和:111

約数の個数: 144

約数和(自身を含む): 554641920

約数和(自身を除く): 346265500

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 49, 62, 70, 76, 95, 98, 124, 133, 140, 155, 190, 196, 217, 245, 266, 310, 361, 380, 434, 490, 532, 589, 620, 665, 722, 868, 931, 980, 1085, 1178, 1330, 1444, 1519, 1805, 1862, 2170, 2356, 2527, 2660, 2945, 3038, 3610, 3724, 4123, 4340, 4655, 5054, 5890, 6076, 6859, 7220, 7595, 8246, 9310, 10108, 11191, 11780, 12635, 13718, 15190, 16492, 17689, 18620, 20615, 22382, 25270, 27436, 28861, 30380, 34295, 35378, 41230, 44764, 48013, 50540, 55955, 57722, 68590, 70756, 78337, 82460, 88445, 96026, 111910, 115444, 137180, 144305, 156674, 176890, 192052, 212629, 223820, 240065, 288610, 313348, 336091, 353780, 391685, 425258, 480130, 548359, 577220, 672182, 783370, 850516, 960260, 1063145, 1096718, 1344364, 1488403, 1566740, 1680455, 2126290, 2193436, 2741795, 2976806, 3360910, 4252580, 5483590, 5953612, 6721820, 7442015, 10418821, 10967180, 14884030, 20837642, 29768060, 41675284, 52094105, 104188210, 208376420]

約数ペア:

[(1, 208376420), (2, 104188210), (4, 52094105), (5, 41675284), (7, 29768060), (10, 20837642), (14, 14884030), (19, 10967180), (20, 10418821), (28, 7442015), (31, 6721820), (35, 5953612), (38, 5483590), (49, 4252580), (62, 3360910), (70, 2976806), (76, 2741795), (95, 2193436), (98, 2126290), (124, 1680455), (133, 1566740), (140, 1488403), (155, 1344364), (190, 1096718), (196, 1063145), (217, 960260), (245, 850516), (266, 783370), (310, 672182), (361, 577220), (380, 548359), (434, 480130), (490, 425258), (532, 391685), (589, 353780), (620, 336091), (665, 313348), (722, 288610), (868, 240065), (931, 223820), (980, 212629), (1085, 192052), (1178, 176890), (1330, 156674), (1444, 144305), (1519, 137180), (1805, 115444), (1862, 111910), (2170, 96026), (2356, 88445), (2527, 82460), (2660, 78337), (2945, 70756), (3038, 68590), (3610, 57722), (3724, 55955), (4123, 50540), (4340, 48013), (4655, 44764), (5054, 41230), (5890, 35378), (6076, 34295), (6859, 30380), (7220, 28861), (7595, 27436), (8246, 25270), (9310, 22382), (10108, 20615), (11191, 18620), (11780, 17689), (12635, 16492), (13718, 15190)]