1985451720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{18043}}^1$

素因数の和:18195

約数の個数: 128

約数和(自身を含む): 6859607040

約数和(自身を除く): 4874155320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 210, 262, 280, 393, 420, 524, 655, 786, 840, 917, 1048, 1310, 1572, 1834, 1965, 2620, 2751, 3144, 3668, 3930, 4585, 5240, 5502, 7336, 7860, 9170, 11004, 13755, 15720, 18043, 18340, 22008, 27510, 36086, 36680, 54129, 55020, 72172, 90215, 108258, 110040, 126301, 144344, 180430, 216516, 252602, 270645, 360860, 378903, 433032, 505204, 541290, 631505, 721720, 757806, 1010408, 1082580, 1263010, 1515612, 1894515, 2165160, 2363633, 2526020, 3031224, 3789030, 4727266, 5052040, 7090899, 7578060, 9454532, 11818165, 14181798, 15156120, 16545431, 18909064, 23636330, 28363596, 33090862, 35454495, 47272660, 49636293, 56727192, 66181724, 70908990, 82727155, 94545320, 99272586, 132363448, 141817980, 165454310, 198545172, 248181465, 283635960, 330908620, 397090344, 496362930, 661817240, 992725860, 1985451720]

約数ペア:

[(1, 1985451720), (2, 992725860), (3, 661817240), (4, 496362930), (5, 397090344), (6, 330908620), (7, 283635960), (8, 248181465), (10, 198545172), (12, 165454310), (14, 141817980), (15, 132363448), (20, 99272586), (21, 94545320), (24, 82727155), (28, 70908990), (30, 66181724), (35, 56727192), (40, 49636293), (42, 47272660), (56, 35454495), (60, 33090862), (70, 28363596), (84, 23636330), (105, 18909064), (120, 16545431), (131, 15156120), (140, 14181798), (168, 11818165), (210, 9454532), (262, 7578060), (280, 7090899), (393, 5052040), (420, 4727266), (524, 3789030), (655, 3031224), (786, 2526020), (840, 2363633), (917, 2165160), (1048, 1894515), (1310, 1515612), (1572, 1263010), (1834, 1082580), (1965, 1010408), (2620, 757806), (2751, 721720), (3144, 631505), (3668, 541290), (3930, 505204), (4585, 433032), (5240, 378903), (5502, 360860), (7336, 270645), (7860, 252602), (9170, 216516), (11004, 180430), (13755, 144344), (15720, 126301), (18043, 110040), (18340, 108258), (22008, 90215), (27510, 72172), (36086, 55020), (36680, 54129)]