19784520

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2617}}^1$

素因数の和:2644

約数の個数: 128

約数和(自身を含む): 75398400

約数和(自身を除く): 55613880

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, 2617, 3780, 5234, 7560, 7851, 10468, 13085, 15702, 18319, 20936, 23553, 26170, 31404, 36638, 39255, 47106, 52340, 54957, 62808, 70659, 73276, 78510, 91595, 94212, 104680, 109914, 117765, 141318, 146552, 157020, 164871, 183190, 188424, 219828, 235530, 274785, 282636, 314040, 329742, 353295, 366380, 439656, 471060, 494613, 549570, 565272, 659484, 706590, 732760, 824355, 942120, 989226, 1099140, 1318968, 1413180, 1648710, 1978452, 2198280, 2473065, 2826360, 3297420, 3956904, 4946130, 6594840, 9892260, 19784520]

約数ペア:

[(1, 19784520), (2, 9892260), (3, 6594840), (4, 4946130), (5, 3956904), (6, 3297420), (7, 2826360), (8, 2473065), (9, 2198280), (10, 1978452), (12, 1648710), (14, 1413180), (15, 1318968), (18, 1099140), (20, 989226), (21, 942120), (24, 824355), (27, 732760), (28, 706590), (30, 659484), (35, 565272), (36, 549570), (40, 494613), (42, 471060), (45, 439656), (54, 366380), (56, 353295), (60, 329742), (63, 314040), (70, 282636), (72, 274785), (84, 235530), (90, 219828), (105, 188424), (108, 183190), (120, 164871), (126, 157020), (135, 146552), (140, 141318), (168, 117765), (180, 109914), (189, 104680), (210, 94212), (216, 91595), (252, 78510), (270, 73276), (280, 70659), (315, 62808), (360, 54957), (378, 52340), (420, 47106), (504, 39255), (540, 36638), (630, 31404), (756, 26170), (840, 23553), (945, 20936), (1080, 18319), (1260, 15702), (1512, 13085), (1890, 10468), (2520, 7851), (2617, 7560), (3780, 5234)]