1978746840

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{261739}}^1$

素因数の和:261766

約数の個数: 128

約数和(自身を含む): 7538112000

約数和(自身を除く): 5559365160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 3780, 7560, 261739, 523478, 785217, 1046956, 1308695, 1570434, 1832173, 2093912, 2355651, 2617390, 3140868, 3664346, 3926085, 4711302, 5234780, 5496519, 6281736, 7066953, 7328692, 7852170, 9160865, 9422604, 10469560, 10993038, 11778255, 14133906, 14657384, 15704340, 16489557, 18321730, 18845208, 21986076, 23556510, 27482595, 28267812, 31408680, 32979114, 35334765, 36643460, 43972152, 47113020, 49468671, 54965190, 56535624, 65958228, 70669530, 73286920, 82447785, 94226040, 98937342, 109930380, 131916456, 141339060, 164895570, 197874684, 219860760, 247343355, 282678120, 329791140, 395749368, 494686710, 659582280, 989373420, 1978746840]

約数ペア:

[(1, 1978746840), (2, 989373420), (3, 659582280), (4, 494686710), (5, 395749368), (6, 329791140), (7, 282678120), (8, 247343355), (9, 219860760), (10, 197874684), (12, 164895570), (14, 141339060), (15, 131916456), (18, 109930380), (20, 98937342), (21, 94226040), (24, 82447785), (27, 73286920), (28, 70669530), (30, 65958228), (35, 56535624), (36, 54965190), (40, 49468671), (42, 47113020), (45, 43972152), (54, 36643460), (56, 35334765), (60, 32979114), (63, 31408680), (70, 28267812), (72, 27482595), (84, 23556510), (90, 21986076), (105, 18845208), (108, 18321730), (120, 16489557), (126, 15704340), (135, 14657384), (140, 14133906), (168, 11778255), (180, 10993038), (189, 10469560), (210, 9422604), (216, 9160865), (252, 7852170), (270, 7328692), (280, 7066953), (315, 6281736), (360, 5496519), (378, 5234780), (420, 4711302), (504, 3926085), (540, 3664346), (630, 3140868), (756, 2617390), (840, 2355651), (945, 2093912), (1080, 1832173), (1260, 1570434), (1512, 1308695), (1890, 1046956), (2520, 785217), (3780, 523478), (7560, 261739)]