21450870

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1$

素因数の和:530

約数の個数: 96

約数和(自身を含む): 64696320

約数和(自身を除く): 43245450

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 79, 90, 105, 126, 158, 210, 237, 315, 395, 431, 474, 553, 630, 711, 790, 862, 1106, 1185, 1293, 1422, 1659, 2155, 2370, 2586, 2765, 3017, 3318, 3555, 3879, 4310, 4977, 5530, 6034, 6465, 7110, 7758, 8295, 9051, 9954, 12930, 15085, 16590, 18102, 19395, 24885, 27153, 30170, 34049, 38790, 45255, 49770, 54306, 68098, 90510, 102147, 135765, 170245, 204294, 238343, 271530, 306441, 340490, 476686, 510735, 612882, 715029, 1021470, 1191715, 1430058, 1532205, 2145087, 2383430, 3064410, 3575145, 4290174, 7150290, 10725435, 21450870]

約数ペア:

[(1, 21450870), (2, 10725435), (3, 7150290), (5, 4290174), (6, 3575145), (7, 3064410), (9, 2383430), (10, 2145087), (14, 1532205), (15, 1430058), (18, 1191715), (21, 1021470), (30, 715029), (35, 612882), (42, 510735), (45, 476686), (63, 340490), (70, 306441), (79, 271530), (90, 238343), (105, 204294), (126, 170245), (158, 135765), (210, 102147), (237, 90510), (315, 68098), (395, 54306), (431, 49770), (474, 45255), (553, 38790), (630, 34049), (711, 30170), (790, 27153), (862, 24885), (1106, 19395), (1185, 18102), (1293, 16590), (1422, 15085), (1659, 12930), (2155, 9954), (2370, 9051), (2586, 8295), (2765, 7758), (3017, 7110), (3318, 6465), (3555, 6034), (3879, 5530), (4310, 4977)]