1279609240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{839}}^1$

素因数の和:1289

約数の個数: 128

約数和(自身を含む): 3556224000

約数和(自身を除く): 2276614760

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 419, 455, 520, 728, 838, 839, 910, 1676, 1678, 1820, 2095, 2933, 3352, 3356, 3640, 4190, 4195, 5447, 5866, 5873, 6712, 8380, 8390, 10894, 10907, 11732, 11746, 14665, 16760, 16780, 21788, 21814, 23464, 23492, 27235, 29330, 29365, 33560, 38129, 43576, 43628, 46984, 54470, 54535, 58660, 58730, 76258, 76349, 87256, 108940, 109070, 117320, 117460, 152516, 152698, 190645, 217880, 218140, 234920, 305032, 305396, 351541, 381290, 381745, 436280, 610792, 703082, 762580, 763490, 1406164, 1525160, 1526980, 1757705, 2460787, 2812328, 3053960, 3515410, 4570033, 4921574, 7030820, 9140066, 9843148, 12303935, 14061640, 18280132, 19686296, 22850165, 24607870, 31990231, 36560264, 45700330, 49215740, 63980462, 91400660, 98431480, 127960924, 159951155, 182801320, 255921848, 319902310, 639804620, 1279609240]

約数ペア:

[(1, 1279609240), (2, 639804620), (4, 319902310), (5, 255921848), (7, 182801320), (8, 159951155), (10, 127960924), (13, 98431480), (14, 91400660), (20, 63980462), (26, 49215740), (28, 45700330), (35, 36560264), (40, 31990231), (52, 24607870), (56, 22850165), (65, 19686296), (70, 18280132), (91, 14061640), (104, 12303935), (130, 9843148), (140, 9140066), (182, 7030820), (260, 4921574), (280, 4570033), (364, 3515410), (419, 3053960), (455, 2812328), (520, 2460787), (728, 1757705), (838, 1526980), (839, 1525160), (910, 1406164), (1676, 763490), (1678, 762580), (1820, 703082), (2095, 610792), (2933, 436280), (3352, 381745), (3356, 381290), (3640, 351541), (4190, 305396), (4195, 305032), (5447, 234920), (5866, 218140), (5873, 217880), (6712, 190645), (8380, 152698), (8390, 152516), (10894, 117460), (10907, 117320), (11732, 109070), (11746, 108940), (14665, 87256), (16760, 76349), (16780, 76258), (21788, 58730), (21814, 58660), (23464, 54535), (23492, 54470), (27235, 46984), (29330, 43628), (29365, 43576), (33560, 38129)]