21641724

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:507

約数の個数: 72

約数和(自身を含む): 59531472

約数和(自身を除く): 37889748

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 131, 156, 234, 262, 353, 393, 468, 524, 706, 786, 1059, 1179, 1412, 1572, 1703, 2118, 2358, 3177, 3406, 4236, 4589, 4716, 5109, 6354, 6812, 9178, 10218, 12708, 13767, 15327, 18356, 20436, 27534, 30654, 41301, 46243, 55068, 61308, 82602, 92486, 138729, 165204, 184972, 277458, 416187, 554916, 601159, 832374, 1202318, 1664748, 1803477, 2404636, 3606954, 5410431, 7213908, 10820862, 21641724]

約数ペア:

[(1, 21641724), (2, 10820862), (3, 7213908), (4, 5410431), (6, 3606954), (9, 2404636), (12, 1803477), (13, 1664748), (18, 1202318), (26, 832374), (36, 601159), (39, 554916), (52, 416187), (78, 277458), (117, 184972), (131, 165204), (156, 138729), (234, 92486), (262, 82602), (353, 61308), (393, 55068), (468, 46243), (524, 41301), (706, 30654), (786, 27534), (1059, 20436), (1179, 18356), (1412, 15327), (1572, 13767), (1703, 12708), (2118, 10218), (2358, 9178), (3177, 6812), (3406, 6354), (4236, 5109), (4589, 4716)]