77920520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 201916800

約数和(自身を除く): 123996280

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 37, 38, 40, 68, 74, 76, 85, 95, 136, 148, 152, 163, 170, 185, 190, 296, 323, 326, 340, 370, 380, 629, 646, 652, 680, 703, 740, 760, 815, 1258, 1292, 1304, 1406, 1480, 1615, 1630, 2516, 2584, 2771, 2812, 3097, 3145, 3230, 3260, 3515, 5032, 5542, 5624, 6031, 6194, 6290, 6460, 6520, 7030, 11084, 11951, 12062, 12388, 12580, 12920, 13855, 14060, 15485, 22168, 23902, 24124, 24776, 25160, 27710, 28120, 30155, 30970, 47804, 48248, 52649, 55420, 59755, 60310, 61940, 95608, 102527, 105298, 110840, 114589, 119510, 120620, 123880, 205054, 210596, 229178, 239020, 241240, 263245, 410108, 421192, 458356, 478040, 512635, 526490, 572945, 820216, 916712, 1025270, 1052980, 1145890, 1948013, 2050540, 2105960, 2291780, 3896026, 4101080, 4583560, 7792052, 9740065, 15584104, 19480130, 38960260, 77920520]

約数ペア:

[(1, 77920520), (2, 38960260), (4, 19480130), (5, 15584104), (8, 9740065), (10, 7792052), (17, 4583560), (19, 4101080), (20, 3896026), (34, 2291780), (37, 2105960), (38, 2050540), (40, 1948013), (68, 1145890), (74, 1052980), (76, 1025270), (85, 916712), (95, 820216), (136, 572945), (148, 526490), (152, 512635), (163, 478040), (170, 458356), (185, 421192), (190, 410108), (296, 263245), (323, 241240), (326, 239020), (340, 229178), (370, 210596), (380, 205054), (629, 123880), (646, 120620), (652, 119510), (680, 114589), (703, 110840), (740, 105298), (760, 102527), (815, 95608), (1258, 61940), (1292, 60310), (1304, 59755), (1406, 55420), (1480, 52649), (1615, 48248), (1630, 47804), (2516, 30970), (2584, 30155), (2771, 28120), (2812, 27710), (3097, 25160), (3145, 24776), (3230, 24124), (3260, 23902), (3515, 22168), (5032, 15485), (5542, 14060), (5624, 13855), (6031, 12920), (6194, 12580), (6290, 12388), (6460, 12062), (6520, 11951), (7030, 11084)]