216973996

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 430133760

約数和(自身を除く): 213159764

約数列:

[1, 2, 4, 19, 23, 38, 46, 47, 76, 92, 94, 139, 188, 278, 361, 437, 556, 722, 874, 893, 1081, 1444, 1748, 1786, 2162, 2641, 3197, 3572, 4324, 5282, 6394, 6533, 8303, 10564, 12788, 13066, 16606, 16967, 20539, 26132, 33212, 33934, 41078, 50179, 60743, 67868, 82156, 100358, 121486, 124127, 150259, 200716, 242972, 248254, 300518, 390241, 496508, 601036, 780482, 1154117, 1560964, 2308234, 2358413, 2854921, 4616468, 4716826, 5709842, 9433652, 11419684, 54243499, 108486998, 216973996]

約数ペア:

[(1, 216973996), (2, 108486998), (4, 54243499), (19, 11419684), (23, 9433652), (38, 5709842), (46, 4716826), (47, 4616468), (76, 2854921), (92, 2358413), (94, 2308234), (139, 1560964), (188, 1154117), (278, 780482), (361, 601036), (437, 496508), (556, 390241), (722, 300518), (874, 248254), (893, 242972), (1081, 200716), (1444, 150259), (1748, 124127), (1786, 121486), (2162, 100358), (2641, 82156), (3197, 67868), (3572, 60743), (4324, 50179), (5282, 41078), (6394, 33934), (6533, 33212), (8303, 26132), (10564, 20539), (12788, 16967), (13066, 16606)]