678903820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^3\times {\mathrm{101}}^1$

素因数の和:181

約数の個数: 144

約数和(自身を含む): 1767921120

約数和(自身を除く): 1089017300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 101, 133, 140, 190, 196, 202, 245, 266, 361, 380, 404, 490, 505, 532, 665, 707, 722, 931, 980, 1010, 1330, 1414, 1444, 1805, 1862, 1919, 2020, 2527, 2660, 2828, 3535, 3610, 3724, 3838, 4655, 4949, 5054, 6859, 7070, 7220, 7676, 9310, 9595, 9898, 10108, 12635, 13433, 13718, 14140, 17689, 18620, 19190, 19796, 24745, 25270, 26866, 27436, 34295, 35378, 36461, 38380, 48013, 49490, 50540, 53732, 67165, 68590, 70756, 72922, 88445, 94031, 96026, 98980, 134330, 137180, 145844, 176890, 182305, 188062, 192052, 240065, 255227, 268660, 336091, 353780, 364610, 376124, 470155, 480130, 510454, 672182, 692759, 729220, 940310, 960260, 1020908, 1276135, 1344364, 1385518, 1680455, 1786589, 1880620, 2552270, 2771036, 3360910, 3463795, 3573178, 4849313, 5104540, 6721820, 6927590, 7146356, 8932945, 9698626, 13855180, 17865890, 19397252, 24246565, 33945191, 35731780, 48493130, 67890382, 96986260, 135780764, 169725955, 339451910, 678903820]

約数ペア:

[(1, 678903820), (2, 339451910), (4, 169725955), (5, 135780764), (7, 96986260), (10, 67890382), (14, 48493130), (19, 35731780), (20, 33945191), (28, 24246565), (35, 19397252), (38, 17865890), (49, 13855180), (70, 9698626), (76, 8932945), (95, 7146356), (98, 6927590), (101, 6721820), (133, 5104540), (140, 4849313), (190, 3573178), (196, 3463795), (202, 3360910), (245, 2771036), (266, 2552270), (361, 1880620), (380, 1786589), (404, 1680455), (490, 1385518), (505, 1344364), (532, 1276135), (665, 1020908), (707, 960260), (722, 940310), (931, 729220), (980, 692759), (1010, 672182), (1330, 510454), (1414, 480130), (1444, 470155), (1805, 376124), (1862, 364610), (1919, 353780), (2020, 336091), (2527, 268660), (2660, 255227), (2828, 240065), (3535, 192052), (3610, 188062), (3724, 182305), (3838, 176890), (4655, 145844), (4949, 137180), (5054, 134330), (6859, 98980), (7070, 96026), (7220, 94031), (7676, 88445), (9310, 72922), (9595, 70756), (9898, 68590), (10108, 67165), (12635, 53732), (13433, 50540), (13718, 49490), (14140, 48013), (17689, 38380), (18620, 36461), (19190, 35378), (19796, 34295), (24745, 27436), (25270, 26866)]