21357630

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:223

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 45865890

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 29, 30, 35, 42, 45, 49, 58, 63, 70, 87, 90, 98, 105, 126, 145, 147, 167, 174, 203, 210, 245, 261, 290, 294, 315, 334, 406, 435, 441, 490, 501, 522, 609, 630, 735, 835, 870, 882, 1002, 1015, 1169, 1218, 1305, 1421, 1470, 1503, 1670, 1827, 2030, 2205, 2338, 2505, 2610, 2842, 3006, 3045, 3507, 3654, 4263, 4410, 4843, 5010, 5845, 6090, 7014, 7105, 7515, 8183, 8526, 9135, 9686, 10521, 11690, 12789, 14210, 14529, 15030, 16366, 17535, 18270, 21042, 21315, 24215, 24549, 25578, 29058, 33901, 35070, 40915, 42630, 43587, 48430, 49098, 52605, 63945, 67802, 72645, 73647, 81830, 87174, 101703, 105210, 122745, 127890, 145290, 147294, 169505, 203406, 217935, 237307, 245490, 305109, 339010, 368235, 435870, 474614, 508515, 610218, 711921, 736470, 1017030, 1186535, 1423842, 1525545, 2135763, 2373070, 3051090, 3559605, 4271526, 7119210, 10678815, 21357630]

約数ペア:

[(1, 21357630), (2, 10678815), (3, 7119210), (5, 4271526), (6, 3559605), (7, 3051090), (9, 2373070), (10, 2135763), (14, 1525545), (15, 1423842), (18, 1186535), (21, 1017030), (29, 736470), (30, 711921), (35, 610218), (42, 508515), (45, 474614), (49, 435870), (58, 368235), (63, 339010), (70, 305109), (87, 245490), (90, 237307), (98, 217935), (105, 203406), (126, 169505), (145, 147294), (147, 145290), (167, 127890), (174, 122745), (203, 105210), (210, 101703), (245, 87174), (261, 81830), (290, 73647), (294, 72645), (315, 67802), (334, 63945), (406, 52605), (435, 49098), (441, 48430), (490, 43587), (501, 42630), (522, 40915), (609, 35070), (630, 33901), (735, 29058), (835, 25578), (870, 24549), (882, 24215), (1002, 21315), (1015, 21042), (1169, 18270), (1218, 17535), (1305, 16366), (1421, 15030), (1470, 14529), (1503, 14210), (1670, 12789), (1827, 11690), (2030, 10521), (2205, 9686), (2338, 9135), (2505, 8526), (2610, 8183), (2842, 7515), (3006, 7105), (3045, 7014), (3507, 6090), (3654, 5845), (4263, 5010), (4410, 4843)]