20217306820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{577}}^1$

素因数の和:858

約数の個数: 144

約数和(自身を含む): 47059705728

約数和(自身を除く): 26842398908

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 211, 230, 361, 380, 422, 437, 460, 577, 722, 844, 874, 1055, 1154, 1444, 1748, 1805, 2110, 2185, 2308, 2885, 3610, 4009, 4220, 4370, 4853, 5770, 7220, 8018, 8303, 8740, 9706, 10963, 11540, 13271, 16036, 16606, 19412, 20045, 21926, 24265, 26542, 33212, 40090, 41515, 43852, 48530, 53084, 54815, 66355, 76171, 80180, 83030, 92207, 97060, 109630, 121747, 132710, 152342, 166060, 184414, 208297, 219260, 243494, 252149, 265420, 304684, 368828, 380855, 416594, 461035, 486988, 504298, 608735, 761710, 833188, 922070, 1008596, 1041485, 1217470, 1260745, 1523420, 1751933, 1844140, 2082970, 2313193, 2434940, 2521490, 2800181, 3503866, 4165940, 4626386, 4790831, 5042980, 5600362, 7007732, 8759665, 9252772, 9581662, 11200724, 11565965, 14000905, 17519330, 19163324, 23131930, 23954155, 28001810, 35038660, 43950667, 46263860, 47908310, 53203439, 56003620, 87901334, 95816620, 106406878, 175802668, 212813756, 219753335, 266017195, 439506670, 532034390, 879013340, 1010865341, 1064068780, 2021730682, 4043461364, 5054326705, 10108653410, 20217306820]

約数ペア:

[(1, 20217306820), (2, 10108653410), (4, 5054326705), (5, 4043461364), (10, 2021730682), (19, 1064068780), (20, 1010865341), (23, 879013340), (38, 532034390), (46, 439506670), (76, 266017195), (92, 219753335), (95, 212813756), (115, 175802668), (190, 106406878), (211, 95816620), (230, 87901334), (361, 56003620), (380, 53203439), (422, 47908310), (437, 46263860), (460, 43950667), (577, 35038660), (722, 28001810), (844, 23954155), (874, 23131930), (1055, 19163324), (1154, 17519330), (1444, 14000905), (1748, 11565965), (1805, 11200724), (2110, 9581662), (2185, 9252772), (2308, 8759665), (2885, 7007732), (3610, 5600362), (4009, 5042980), (4220, 4790831), (4370, 4626386), (4853, 4165940), (5770, 3503866), (7220, 2800181), (8018, 2521490), (8303, 2434940), (8740, 2313193), (9706, 2082970), (10963, 1844140), (11540, 1751933), (13271, 1523420), (16036, 1260745), (16606, 1217470), (19412, 1041485), (20045, 1008596), (21926, 922070), (24265, 833188), (26542, 761710), (33212, 608735), (40090, 504298), (41515, 486988), (43852, 461035), (48530, 416594), (53084, 380855), (54815, 368828), (66355, 304684), (76171, 265420), (80180, 252149), (83030, 243494), (92207, 219260), (97060, 208297), (109630, 184414), (121747, 166060), (132710, 152342)]