21391560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{683}}^1$

素因数の和:732

約数の個数: 128

約数和(自身を含む): 73872000

約数和(自身を除く): 52480440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 29, 30, 36, 40, 45, 54, 58, 60, 72, 87, 90, 108, 116, 120, 135, 145, 174, 180, 216, 232, 261, 270, 290, 348, 360, 435, 522, 540, 580, 683, 696, 783, 870, 1044, 1080, 1160, 1305, 1366, 1566, 1740, 2049, 2088, 2610, 2732, 3132, 3415, 3480, 3915, 4098, 5220, 5464, 6147, 6264, 6830, 7830, 8196, 10245, 10440, 12294, 13660, 15660, 16392, 18441, 19807, 20490, 24588, 27320, 30735, 31320, 36882, 39614, 40980, 49176, 59421, 61470, 73764, 79228, 81960, 92205, 99035, 118842, 122940, 147528, 158456, 178263, 184410, 198070, 237684, 245880, 297105, 356526, 368820, 396140, 475368, 534789, 594210, 713052, 737640, 792280, 891315, 1069578, 1188420, 1426104, 1782630, 2139156, 2376840, 2673945, 3565260, 4278312, 5347890, 7130520, 10695780, 21391560]

約数ペア:

[(1, 21391560), (2, 10695780), (3, 7130520), (4, 5347890), (5, 4278312), (6, 3565260), (8, 2673945), (9, 2376840), (10, 2139156), (12, 1782630), (15, 1426104), (18, 1188420), (20, 1069578), (24, 891315), (27, 792280), (29, 737640), (30, 713052), (36, 594210), (40, 534789), (45, 475368), (54, 396140), (58, 368820), (60, 356526), (72, 297105), (87, 245880), (90, 237684), (108, 198070), (116, 184410), (120, 178263), (135, 158456), (145, 147528), (174, 122940), (180, 118842), (216, 99035), (232, 92205), (261, 81960), (270, 79228), (290, 73764), (348, 61470), (360, 59421), (435, 49176), (522, 40980), (540, 39614), (580, 36882), (683, 31320), (696, 30735), (783, 27320), (870, 24588), (1044, 20490), (1080, 19807), (1160, 18441), (1305, 16392), (1366, 15660), (1566, 13660), (1740, 12294), (2049, 10440), (2088, 10245), (2610, 8196), (2732, 7830), (3132, 6830), (3415, 6264), (3480, 6147), (3915, 5464), (4098, 5220)]