198975980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:212

約数の個数: 144

約数和(自身を含む): 524353536

約数和(自身を除く): 325377556

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 31, 35, 38, 62, 70, 76, 95, 124, 127, 133, 140, 155, 190, 217, 254, 266, 310, 361, 380, 434, 508, 532, 589, 620, 635, 665, 722, 868, 889, 1085, 1178, 1270, 1330, 1444, 1778, 1805, 2170, 2356, 2413, 2527, 2540, 2660, 2945, 3556, 3610, 3937, 4123, 4340, 4445, 4826, 5054, 5890, 7220, 7874, 8246, 8890, 9652, 10108, 11191, 11780, 12065, 12635, 15748, 16492, 16891, 17780, 19685, 20615, 22382, 24130, 25270, 27559, 33782, 39370, 41230, 44764, 45847, 48260, 50540, 55118, 55955, 67564, 74803, 78337, 78740, 82460, 84455, 91694, 110236, 111910, 137795, 149606, 156674, 168910, 183388, 223820, 229235, 275590, 299212, 313348, 320929, 337820, 374015, 391685, 458470, 523621, 551180, 641858, 748030, 783370, 916940, 1047242, 1283716, 1421257, 1496060, 1566740, 1604645, 2094484, 2618105, 2842514, 3209290, 5236210, 5685028, 6418580, 7106285, 9948799, 10472420, 14212570, 19897598, 28425140, 39795196, 49743995, 99487990, 198975980]

約数ペア:

[(1, 198975980), (2, 99487990), (4, 49743995), (5, 39795196), (7, 28425140), (10, 19897598), (14, 14212570), (19, 10472420), (20, 9948799), (28, 7106285), (31, 6418580), (35, 5685028), (38, 5236210), (62, 3209290), (70, 2842514), (76, 2618105), (95, 2094484), (124, 1604645), (127, 1566740), (133, 1496060), (140, 1421257), (155, 1283716), (190, 1047242), (217, 916940), (254, 783370), (266, 748030), (310, 641858), (361, 551180), (380, 523621), (434, 458470), (508, 391685), (532, 374015), (589, 337820), (620, 320929), (635, 313348), (665, 299212), (722, 275590), (868, 229235), (889, 223820), (1085, 183388), (1178, 168910), (1270, 156674), (1330, 149606), (1444, 137795), (1778, 111910), (1805, 110236), (2170, 91694), (2356, 84455), (2413, 82460), (2527, 78740), (2540, 78337), (2660, 74803), (2945, 67564), (3556, 55955), (3610, 55118), (3937, 50540), (4123, 48260), (4340, 45847), (4445, 44764), (4826, 41230), (5054, 39370), (5890, 33782), (7220, 27559), (7874, 25270), (8246, 24130), (8890, 22382), (9652, 20615), (10108, 19685), (11191, 17780), (11780, 16891), (12065, 16492), (12635, 15748)]